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topic: Climate Change And Extreme Weather
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Global warming hits hardest for those who can’t escape it
- The world’s most vulnerable people, including refugees, migrants and the poor, increasingly face threats related to climate change.
- Many lack the ability to move away from impacts like heat, flooding and landslides.
- A new study reveals a lack of data showing the causes of this involuntary immobility.
- Experts say governments and organizations can invest in low-cost interventions aimed at reducing suffering.
DRC’s Kinshasa could see deadly rain and floods every 2 years: Study
In early April, extreme rainfall and flooding in and around Kinshasa, the capital of the Democratic Republic of the Congo, killed at least 33 people. Such catastrophic rainfall events are predicted to hit Kinshasa every two years in today’s warming climate, according to a new rapid study by World Weather Attribution (WWA), a network of […]
Cyclone Tam brings widespread flooding to New Zealand for days
New Zealand experienced heavy flooding and damage due to Cyclone Tam last week through this weekend. What started out as a tropical low hovering over the South Pacific Ocean nation of Vanuatu was upgraded to Cyclone Tam on April 14 by the Fiji meteorological service, media reported. The cyclone then moved southeast toward New Zealand, […]
Nature on the move: How conservation must adapt to survive
Resilience means getting through something — tough, messy, with losses, but surviving. So said Andrew Whitworth, executive director of Osa Conservation in Costa Rica, summing up a growing shift in conservation thinking. As the planet hurtles toward a future 3-5° Celsius (5.4-9° Fahrenheit) warmer by 2075, holding the line is no longer enough. The goal […]
Succulents die off with expanding desert in South Africa and Namibia
Succulents endemic to South Africa and Namibia are drying up and dying across the increasingly hot northern part of their range. Mongabay contributor Leonie Joubert reports that a combination of climate change and overgrazing are causing desertification that the plants can’t survive. In September 2024, botanists Wendy Foden and Kayleigh Murray surveyed an area Foden […]
Diverse forests and forest rewilding offer resilience against climate change
- Recent studies from two long-running planted forest experiments in China and Panama find that increasing tree diversity in reforestation efforts can boost resilience in the face of climate change, among other benefits.
- Researchers elsewhere propose a “rewilding-inspired forestry” approach that aims to restore biodiversity, aid climate mitigation and bolster forest ecosystems — an approach that requires a significant shift from current forestry practices.
- However, scientists underline that while reforestation and forest rewilding can contribute to curbing climate change, they have their limits and must be combined with deep carbon emissions cuts and conservation of existing forests.
Typhoon-strength winds sweep across northern China, killing cyclist
The strongest winds in decades triggered damage across northern and eastern China, killing a cyclist, grounding flights, shutting down tourist sites, and prompted emergency weather alerts across much of the country. The cyclist, a 55-year-old woman from Anhui province, was killed on April 12 when she was struck by a falling tree amid a series […]
Even the Gulf of Aqaba’s ‘supercorals’ bleached during 2024 heat wave
- Scientists have long considered the corals in the Gulf of Aqaba in the northern Red Sea to be uniquely resilient to extreme temperatures.
- For the first time on record, however, the heat wave of 2024 bleached some of these super-resilient corals in Israeli and Jordanian waters, according to scientists.
- Scientists studying the episode’s severity and extent estimate that perhaps 5% of the corals in their study area in Israeli waters bleached during the oppressive Northern Hemisphere summer; a small fraction died, but most recovered over the relatively cooler months that followed.
- Tackling threats like pollution that could reduce the corals’ ability to withstand extreme heat is the best way to protect them from rising marine temperatures, and scientists say an oil terminal that sits barely half a kilometer from some of the “supercorals” poses an imminent threat.
Heat wave scorches parts of India with record temperatures
Several cities across India saw temperatures top 40° Celsius, or 104° Fahrenheit, this past week, with some areas exceeding 46°C (114.8°F). Delhi experienced a heat wave for three consecutive days, recording its warmest April night in three years, with temperatures 5-6°C (9-10.8°F) above normal for the period. Many areas in the country’s northwest remain on […]
In Panama, Indigenous Guna prepare for climate exodus from a second island home
- The island of Uggubseni, located in Panama’s Guna Yala provincial-level Indigenous region, spent the month of February participating in region-wide celebrations to mark the centenary of a revolution in which the Indigenous Guna expelled repressive Panamanian authorities and established their autonomy in the region.
- Though the intervening century has left the Guna’s fierce independence undimmed, new existential threats now face Uggubseni: Accelerating sea level rise due to human-caused climate change and overpopulation.
- A consensus now exists among Uggubseni residents that moving inland is necessary; but it remains unclear whether the government will be able to deliver the necessary funding and support.
- Although 63 communities nationwide are at risk of sinking due to climate change, there’s only one other model for climate relocation: In June 2024 the Panamanian government relocated around 300 families from Gardi Sugdub, another island in Guna Yala, to a new community on the mainland where problems remain rife.
How is conservation preparing for a much hotter world? Experts share
- Fifty years from now, in 2075, the world will be considerably hotter, perhaps as much as 3-5° Celsius (4.5 to 9° Fahrenheit) above the pre-industrial average.
- Experts say we need to focus on building greater resilience into ecosystems now to help species get through the next half century.
- We should be protecting large landscapes, including altitudinal gradients, according to experts.
- We should also be focusing on good management, community relations, rewilding and restoration.
Honduras pays the climate cost as its forests disappear and storms rise
- Despite its high vulnerability to extreme weather events, Honduras continues to clear its forests, seen as one of its best protections against climate change and intensifying storms and hurricanes.
- Between 1998 and 2017, Honduras was the world’s second-most affected country by climate change.
- The biggest driver of deforestation in Honduras is shifting agriculture, responsible for nearly three-quarters of all tree loss, with cattle ranching being a top culprit.
- International organizations focusing on climate adaptation and mitigation are urging the Honduran government to do more to prioritize long-term preparedness, with the country recently making progress in that direction.
Iconic frankincense trees of Yemen’s Socotra Island have become rarer
Socotra Island, known as the Galápagos of the Indian Ocean, hosts an unusual diversity of plants found nowhere else on Earth. Nine of these endemic plant species, belonging to the genus Boswellia, are now closer to extinction, according to the IUCN, the global wildlife conservation authority. Boswellia is an “iconic genus,” Frans Bongers, a professor […]
122 companies responsible for a third of present day sea-level rise: Study
What’s new: Almost half of global average temperature rise and a third of sea-level rise can be attributed to the “carbon majors,” the world’s 122 largest fossil fuel and cement producers, a recent paper shows. What the study says: Research from U.S.-based science advocacy NGO Union of Concerned Scientists (UCS) used climate-carbon cycle models, and […]
Floods devastate normally arid parts of Australia’s Queensland
Intense flooding submerged usually dry areas of Queensland state in eastern Australia during the last week of March, forcing many people to evacuate and leave their livestock behind. David Crisafulli, the Queensland premier, called the floods “unprecedented” as several places in western Queensland recorded the worst floods in the last 50 years, CNN reported. Some […]
Polar sea ice continues steep decline; but will a troubled world notice?
- Polar sea ice has reached record, and near-record, lows for this time of year, pushing the pace of global warming and alarming scientists. The just declared 2025 Arctic sea ice extent winter maximum is the lowest on record, at 14.33 million km² (5.53 million mi²). That’s 80,000 km² (31,000 mi²) below the previous low seen on March 7, 2017.
- The 2025 Antarctic sea ice extent summer minimum on March 1 tied for the second lowest on record, at 1.98 million km² (764,000 million mi²). The all time record Antarctic summer low was 1.79 million km² (691,000 million mi²) reached on February 21, 2023. Polar ice satellite records have been continuous since 1979.
- Sea ice loss is expected to continue its slide based on climate models, with scientists warning that the Arctic landscape is likely to be transformed beyond recognition within decades. Sweeping changes will devastate Indigenous polar communities, disrupt Arctic ecosystems, and ultimately lead to the demise of iconic polar wildlife.
- Inhospitable polar conditions continue challenging scientists’ ability to gather data and make precise polar forecasts vital for knowing our climate future. But it may be even more challenging to raise public awareness and political will to reduce carbon emissions and reverse polar ice loss before it passes dangerous tipping points.
Hotter weather threatens heart health, Australian study warns
Extreme heat is putting people in Australia at serious risk of heart problems and premature deaths, according to new research. As the climate warms, rising temperatures could more than double Australia’s burden of cardiovascular diseases by 2050, unless greenhouse gas emissions are reduced, and people take measures to adapt to the heat, researchers found. Cardiovascular […]
African forum on urban forests calls for greater access to green spaces
- Researchers policymakers, and civil society gathered at the African Urban Forest Forum in Johannesburg to discuss the role of urban forests in African cities.
- The forum centered on how trees can make cities more climate-resilient, providing more equitable access to green spaces, and finding sustainable financing strategy for urban forests.
- In a declaration at the end of the forum, participants called for greater collaboration to increase tree canopy cover in cities and address the combined challenges of rapid urbanisation, climate change and historical inequalities.
Africa’s last tropical glaciers are melting away along with local livelihoods
- Africa’s remaining tropical glaciers are rapidly disappearing as greenhouse gas emissions drive global warming.
- New maps published by Project Pressure show the Stanley Plateau glacier, in Uganda’s Rwenzori Mountains, lost nearly 30% of its surface area between 2020 and 2024.
- The Rwenzoris’ glaciers are a vital source of water for more than 5 million people living in the plains below the mountain range; they also have cultural significance.
- Project Pressure’s ongoing surveys, carried out in collaboration with the Uganda Wildlife Authority, are intended to provide local authorities with data needed to adapt to the loss of the glaciers and other impacts of climate change.
With climate change, cryosphere melt scales up as a threat to planetary health
- Earth’s cryosphere — comprised of ice sheets, glaciers, permafrost and snowfall — is in a rapid state of flux due to escalating climate change, with numerous studies underlining the grave risks posed by the thaw.
- Today, that worldwide meltdown poses new threats to human lives — endangering freshwater supplies and food security while increasing the risks of natural disasters and disease outbreaks. Cryosphere loss poses immense dangers to the environment, agriculture, economy and society according to a new report.
- If emissions continue unabated, these problems will only worsen. Scientists warn of compounding risks as cryosphere melt escalates, including sea level rise, the slowing of ocean currents, and the triggering of feedbacks that will add to climate change.
- 2025 is designated the International Year of Glaciers’ Preservation. Experts are calling for drastic cuts to carbon emissions because each fraction of a degree of warming avoided counts toward the preservation of the cryosphere along with the ecosystem services that ice, snow and permafrost provide.
Australia faces inflation, agriculture losses after Cyclone Alfred
The Australian government has warned of impacts to the country’s economy in the wake of Cyclone Alfred that caused massive losses to infrastructure, agriculture and the dairy industries when it struck in late February. The horticultural industry was among the worst hit, with strong winds toppling and damaging hundreds of orchard trees, and floodwaters inundating […]
Sri Lanka communities left gasping for climate mitigation support
- Despite being highly vulnerable to climate risk, Sri Lanka is slow to tap into climate funding due to a range of issues including inadequate data systems, institutional weaknesses and limited capacity to design and implement viable projects.
- Sri Lanka’s disaster management units require significant funding to initiate mitigation measures amid increasing climate change impacts, where the most vulnerable populations bear the brunt of climate impacts.
- The island’s nationally determined contributions (NDCs) are still to be submitted, adding to delays in pursuing climate finance opportunities for Sri Lanka.
- With many people vulnerable to climate change impacts and lacking adaptive capacity, building resilience calls for much higher financial investments in climate adaptation.
Deadly Botswana rains made more likely by climate change, rapid urbanization
Unusually heavy rainfall struck southern Botswana and eastern South Africa from Feb. 16-20, flooding cities and killing at least 31 people. In Botswana, the government said nearly 5,500 people were affected, and more than 2,000 people evacuated. A new rapid study by the World Weather Attribution (WWA), a team of international climate scientists analyzing extreme […]
A tale of two cities: What drove 2024’s Valencia and Porto Alegre floods?
- In 2024, catastrophic floods occurred in the cities of Porto Alegre, Brazil, and Valencia, Spain. These two record floods number among the thousands of extreme weather events that saw records for temperature, drought and deluge shattered across the globe. Such horrors have only continued in 2025, with the cataclysmic wildfires in Los Angeles.
- Scientists have clearly pegged these disasters to carbon emissions and intensifying climate change. But a closer look at Porto Alegre and Valencia shows that other causes contributed to the floods and droughts there, and elsewhere on the planet — problems requiring nuanced but Earth-wide changes in how people live and society develops.
- Researchers especially point to the drastic destabilization of the world’s water cycle, which is increasingly bringing far too little precipitation to many regions for far too long, only to suddenly switch to too much rain all at once — sometimes a year’s worth in a single day, as happened in Valencia when 445.5 mm (17.5 inches) fell in 24 hours.
- The problem isn’t only CO2 emissions, but also local deforestation and hardened urban infrastructure that promote flooding. But what may be seriously underestimated is how large-scale destruction of forest, marshland and other vegetation is dangerously altering rainfall patterns, a theory proposed decades ago by a little-known Spanish scientist.
Indonesia families evicted for Jakarta PIK2 project flooded at relocation site
- The peak of the rainy season in Indonesia has caused damage across much of the archipelago, with major landslides in forested uplands.
- On the north coast of Jakarta’s greater metropolitan area, families displaced by an upscale property development were relocated to a site that later flooded.
- A landslide in January killed 26 people in one village in Central Java province, while a married couple were swept away last week in a flash flood in a nearby community.
- Research predicts annual rainfall could increase 10% in volume by 2050 in Indonesia, while incidents of extreme rain could become more frequent.
Thousands affected as cyclone floods Réunion Island in Indian Ocean
At least four people were killed and hundreds of thousands were left without water or electricity as Cyclone Garance flooded parts of the island of Réunion, a French territory in the Indian Ocean, late last week, reports say. The cyclone made landfall on Feb. 28 on the northern side of the island, which lies east […]
Climate change made LA fires more likely amid hot, dry conditions: Report
The devastating fires that swept through parts of Los Angeles, U.S., in January raged for more than three weeks before being fully contained. In that time, they burned through more than 20,200 hectares (50,000 acres) of forests and homes, killing at least 29 people. A recent report from World Weather Attribution (WWA) finds that climate […]
Japan sees record snowfall as Australia braces for cyclone Zelia
Japan: Record-breaking snowfall wreaked havoc in northern Japan last week, leaving at least three people dead and 54 injured as of Feb. 10, according to Japan’s Fire and Disaster Management Agency. Among the worst hit regions were Hokkaido, the country’s northernmost island, and the Japan Sea coast. The thick snow halted transportation in many areas […]
Brazil has seen a 460% increase in climate-related disasters since the 1990s
- An unprecedented study analyzed data from 1991 to 2023 and found that each 0.1°C increase in average global air temperature led to 360 new climate disaster events and damages in Brazil amounting to R$ 5.6 billion ($970 million).
- The global warming process has accelerated over the current decade, resulting in an average of 4,077 recorded climate-related disasters per year in Brazil, compared to 725 per year during the 1990s — an increase of 460%.
- The extreme events recorded over the period — totaling 64,280 — include droughts, floods and storms in 5,117 Brazilian municipalities; over 219 million people were affected, 78 million of whom during the last four years.
- Despite the increased number of disasters and the damage they caused, Brazil’s federal budget for risk and disaster management has been cut every year between 2012 and 2023 by an average of R$ 200 million ($34.6 million) per year.
January 2025 was warmest on record as climate change ‘overwhelms’ La Niña’s cooling
January 2025 was the warmest January on record, surpassing the previous record set by January 2024, according to satellite data from the EU’s Copernicus program. The findings were unexpected as ongoing La Niña conditions in the Pacific typically cool down global temperatures. The global average surface air temperature for the month reached 1.75° Celsius (3.15° […]
Australia reeling from floods in the north, bushfires in the south
Northeastern Australia, particularly the state of Queensland, has faced record-breaking rainfall of up to 2 meters, or 6.5 feet, since Feb. 1, reportedly leaving at least two people dead. Queensland Premier David Crisafulli called the damage “quite frankly incredible,” with the state experiencing nonstop rains, heavy flooding and power outages, BBC reported. He also called […]
Cyclone Elvis kills 5 in Madagascar as another storm approaches
Madagascar is bracing for Tropical Cyclone Faida to make landfall on its northern coast on Feb. 4, even as it deals with the aftermath of another recently dissipated storm, Elvis, that reportedly killed at least five people. Those killed during Elvis’s passage were involved in “lightning events” in Vohibato district in eastern Madagascar, according to […]
Mexican fishers relocate in wake of sea level rise, raising job concerns
- In the southern Mexican state of Tabasco, most residents of the El Bosque community have been relocated after their homes were destroyed by coastal erosion.
- Community members have expressed concern about job security, as the new site is 12 kilometers (7.4 miles) away from the sea and residents cannot as easily fish, which they depend on for their livelihoods.
- While planned relocation has emerged as a critical strategy to protect those impacted by climate change, reports have shown relocation does not always reduce socioeconomic pressures.
- Although fishers from El Bosque are concerned about the impact of the relocation on their livelihoods, some see it as an opportunity for younger generations to seek alternative livelihoods and better opportunities.
Explosive ‘bomb cyclone’ pummels Europe, hitting UK hardest
Back-to-back storms have ravaged the U.K. and neighboring Ireland and France, causing torrential rains, power outages and flooding the past several days and overall “wild weather,” the Associated Press reported. Storm Éowyn first struck the Britain and Ireland on Jan. 23, bringing with it heavy rains and strong winds, followed by Storm Herminia soon after. […]
Historic Arctic freeze for US South and record rain in Western Australia
The southern states of the U.S. are facing a winter storm this week that will bring heavy snow and ice to a region that rarely experiences such conditions. More than 220 million people are expected to be affected from Texas to South Carolina. Several states, including Louisiana, Georgia, Alabama, Florida and Mississippi, have each already […]
‘Unusual’ and weak La Niña confirmed, offers cooling respite after record El Niño
It’s official: a weak La Niña came into fruition in late December and is expected, with significant uncertainty, to last until sometime between February and April, the U.S. National Oceanic and Atmospheric Administration announced. La Niña often brings wetter conditions to Southeast Asia and the Brazilian Amazon, while cooling global temperatures overall, potentially easing recent […]
Global temperature in 2024 hits record 1.55°C over pre-industrial level
The year 2024 was the hottest on record, with an average temperature of 1.55° Celsius (2.79° Fahrenheit) higher than pre-industrial levels, surpassing the previous record set in 2023, according to six international data sets. Scientists caution that the data represent the average for the Earth’s year-round weather and don’t mean that the climate has exceeded […]
World’s record heat is worsening air pollution and health in Global South
- 2024 was the hottest year on record, producing intense, long-lasting heat waves. Climate change-intensified extreme events last year included the formation of vast heat domes — areas of high pressure that stalled and persisted above continental land masses in Asia, Africa, South and North America, and Europe.
- Heat domes intensify unhealthy air pollution from vehicles, industry, wildfires and dust storms. When a heat wave gripped New Delhi, India, last summer, temperatures soared, resulting in unhealthy concentrations of ground-level ozone — pollutants especially unhealthy for outdoor workers.
- When climate change-driven heat, drought and record wildfires occurred in the Brazilian Amazon last year, the fires produced massive amounts of wood smoke containing dangerous levels of toxic particulates that cause respiratory disease. Indigenous people living in remote areas had little defense against the smoke.
- Intense heat also impacted Nigeria in 2024, where major dust storms and rising temperatures created conditions that helped increased cases of meningitis — a sometimes deadly disease, especially in poor areas. Escalating climate change is expected to exacerbate pollution and worsen public health in the future.
Deadly wildfires force thousands to evacuate homes in Los Angeles
Wildfires in Southern California, U.S., have killed at least five people, forced some 130,000 to evacuate, and damaged or destroyed more than 2,000 buildings. Numerous fires are raging around Los Angeles county, a region famous for its beaches and Hollywood celebrities. Nearly 30,000 acres (12,140 hectares) have burned in a quickly accelerating fire as of […]
At least 11,500 deaths linked to extreme weather in 2024
Extreme weather in 2024 affected around 18 in every 1,000 people across the globe, according to preliminary figures from the International Disaster Database. Mongabay has compiled the data into an interactive dashboard below. Intense droughts, floods, storms, heat waves and other climate-driven disasters claimed more than 11,500 lives and affected at least 148 million people […]
Climate change fueled record extreme weather events in 2024
Climate change fueled some of the worst extreme weather events on record in 2024, according to a recent report. Researchers at the World Weather Attribution (WWA) and Climate Central reviewed heat waves, droughts, wildfires, storms and floods that struck in 2024, and found that nearly every extreme weather event they studied was “made more intense […]
Southeast Asia in review: 2024
- 2024 was a grim year for conservation and its champions across Southeast Asia, as deforestation surged due to infrastructure, agriculture, logging and mining, threatening critical ecosystems and protected areas.
- Environmental activists and journalists also faced increasing risks, including detentions, harassment and violence, highlighting a growing climate of repression by governments across the region.
- Despite this, there were some conservation successes of note, including wildlife population recoveries, biodiversity discoveries, and Indigenous community victories against harmful development projects.
- Grassroots and nature-based initiatives, like mangrove restoration and sustainable agriculture, showcased effective approaches to enhancing biodiversity and resilience while also improving community livelihood.
Pacific’s ‘Blob’ heat wave killed millions more seabirds than thought: Study
In 2016, scientists became aware of a die-off of common murres, seabirds resembling flying penguins, that were found washed ashore from Alaska to California. A 2020 study estimated, based on an extrapolation from carcasses found on beaches, that roughly 1 million murres may have died, calling it “unprecedented and astonishing,” even “biblical.” However, a new […]
From Christmas trees to mistletoe: Holiday plants facing threats
Choosing a Christmas tree. Kissing under the mistletoe. Many people enjoy these fun traditions during the holiday season. But with climate change and habitat loss, some of these plants associated with Christmas are under threat. Fraser fir The Fraser fir (Abies fraseri), native to the southeastern U.S., is popularly used as a Christmas tree. However, […]
Across continents, Mongabay fellows share insights from reporting in the field
- Mongabay’s Y. Eva Tan Conservation Reporting Fellows spend six months diving into climate, science and environment reporting — and gaining insights that shape the way they approach their work as environmental journalists.
- In this essay, three recent fellows share some of the biggest lessons they learned through the reporting they published during the fellowship.
- As these reflections from India, Brazil and Nigeria show, there are many areas of overlap experienced among communities across regions and continents.
Balochistan’s Gwadar city sits at the crossroads of climate and conflict
- A new study examines the links between conflict and climate in Pakistan’s Balochistan province, where extreme weather can be a threat multiplier.
- The port city of Gwadar serves as an example, as local residents have long had grievances against the state, which were exacerbated by recent flooding that killed several people and displaced hundreds.
- Experts highlight the absence of data-driven policies, citing a gap in research that has hindered solutions; they call for investment in data and the inclusion of local people in decision-making and infrastructure planning.
Officials pledge zoo review after Sumatran elephant is killed in Bali flood
DENPASAR, Indonesia — Conservation authorities in Indonesia have launched a review of the main zoo on the resort island of Bali, after an elephant there was swept away and killed in a flash flood on Dec. 16. ”We‘ll evaluate the management of wildlife, especially the remaining 14 elephants” at Bali Zoo, said Ratna Hendramoko, head of the […]
Thousands feared dead as Cyclone Chido devastates southeast Africa
Intense Tropical Cyclone Chido, which developed in the southwest Indian Ocean, left a trail of destruction in the French island territory Mayotte and nearby countries in southeast Africa like Mozambique, possibly leaving thousands dead and many more without homes and livelihood. “Cyclone Chido underwent rapid intensification before landfall in Mauritius, weakened slightly, and then regained […]
Landmark ICJ climate change hearing concludes; opinion expected in 2025
The world’s top court has finished hearing its largest-ever climate change case. For the first time, 96 countries and 11 international organizations presented their cases before the U.N.’s International Court of Justice (ICJ) from Dec. 2-13, arguing about the obligations of major greenhouse gas-emitting nations in tackling climate change, and the legal frameworks that could […]
Philippines’ ‘extraordinary’ typhoon season was climate-fueled: Scientists
From late October to November this year, six consecutive tropical cyclones battered the Philippines, affecting 30 million people. Data analyses from two separate organizations now show they were intensified by human-induced climate change. International scientific collective World Weather Attribution (WWA) released a study on Dec. 12 showing that climate change has made conditions conducive to […]
Andes glacier melt threatens Amazon’s rivers & intensifies droughts
- A new study found that Andean tropical glaciers have reached their lowest levels in 11,700 years, with drastic consequences for the Amazon due to the overlap of the two ecosystems.
- The findings come to light as record droughts in the Amazon in 2023 and 2024, exacerbated by climate change, have severely impacted local communities, including food insecurity and lack of access to drinking water.
- The ice loss in the Andes could reduce the water flow to the Amazon rivers by up to 20%.
- Venezuela is on the verge of becoming the first country in modern history to lose all its glaciers.
Spain adopts paid ‘climate leave’ policy following deadly floods
Spain has introduced a paid four-day “climate leave” policy to protect workers during extreme weather events, one month after the deadliest storm in Spain’s recent history. The Valencia storm claimed at least 225 lives in October and November, and many people were impacted during their work commutes. On Nov. 28, the Spanish labor ministry updated […]
Battering in U.K. & Ireland, deaths in Thailand & Malaysia as storms keep coming
Hundreds of thousands of people were left without electricity across the U.K. and Ireland after the onslaught of Storm Darragh this past weekend, local media reported. Darragh, which brought wind gusts of 154 kilometers per hour (96 miles per hour), is the fourth named storm of the 2024-25 European windstorm season, which runs from Sept. […]
World’s top court starts hearing historic climate change case
A group of small island nations led by Vanuatu is urging the world’s top court to hold the major greenhouse gas-emitting countries accountable for failing to tackle climate change. The case involves nearly 100 countries and is being heard by 15 judges at the U.N.’s International Court of Justice in the Netherlands. “These ICJ proceedings […]
India, U.K. deal with storms that are ‘symptom of our changing climate’
India is bracing for intense rainfall over the next few days as a deep depression over the Bay of Bengal is set to intensify into what will be called Cyclone Fengal by Nov. 29, according to local media reports. The India Meteorological Department (IMD) said the cyclone is likely to pass near the coast of […]
As climate change upends Ethiopia’s pastoral wisdom, adaptations can help
- In the face of climate change, pastoral and agropastoral communities in eastern Ethiopia remain at the receiving end of worsening droughts and climate shocks that have taken a toll on animal rearing and traditional livelihoods.
- For generations, pastoralists and agropastoralists across the country have used traditional knowledge and weather forecasting for preparedness and drought conditions.
- But these techniques are no longer as effective in the face of frequent unpredictable dry spells and population pressures on pasture.
- Researchers suggest combining this traditional knowledge with innovative strategies to help pastoralists gather real-time data on water conditions that can be key to drought adaptation in the region.
Cities are climate solution leaders: Interview with Vancouver’s Gregor Robertson
- 2024 will likely be the hottest year on record, surpassing the heat record set in 2023. The resulting extreme heat waves, floods, droughts and wildfires took a terrible toll in death, global suffering and economic loss.
- The biggest climate change impacts have by far been in the world’s cities. And the world’s cities have responded proactively, becoming climate solution leaders, even as national governments have dragged their feet for nearly three decades.
- If nations and investment banks offered billions in financing to boost climate work now underway in cities, that effort could then be vastly scaled up, said Gregor Robertson, former mayor of Vancouver, Canada, and a special envoy to the Coalition for High Ambition Multilevel Partnerships. This is an exclusive Mongabay interview.
Studies link stronger dengue outbreak in Bangladesh to climate change
- A typical consequence of climate change, drier monsoons with sudden bursts of heavy rain has led to days of inundation and long periods of standing water, creating an ideal situation for breeding mosquitoes, which may be linked to the stronger outbreak of dengue.
- Bangladesh has experienced noticeable changes in the timing and characteristics of its monsoon season. Traditionally occurring from June to August, the monsoon now extends from July to early October.
- Dengue cases have risen dramatically worldwide, with Asia responsible for 70% of reported instances, according to WHO. Researchers indicate that temperatures between 27 and 32 degrees Celsius are optimal for the breeding of Aedes mosquitoes, the vectors of the viral disease.
- As of Nov. 18, the death toll from the dengue outbreak in Bangladesh is 415, with around 80,000 infected, while the country recorded 1,705 dengue-related deaths in 2023.
Organizations tackle droughts, floods in Brazil by planting forests
- Many areas of Brazil have been hit with severe droughts and floods in recent years; scientists say climate change is increasing the incidence of extreme weather events.
- Forests protect against erosion and pollution and help store water in soil and aquifers, buoying water security.
- Organizations across the country are leading efforts to reforest cleared areas — particularly along rivers and other water sources —to mitigate the damaging effects of droughts, floods and other effects of climate change, as well as safeguard and improve habitat for wildlife.
- Experts and stakeholders say broader support is needed at the federal level, while a representative of Brazil’s Ministry of Environment and Climate Change says the government is rolling out conservation plans of its own.
As global fire risk rises, modern homes become toxic plastic traps
- In the 21st century, petrochemical-based building materials and furnishings have replaced traditional wood, fabric and metal materials in homes worldwide. But plastics are more flammable and release persistent toxic chemicals when burned or exposed to high heat.
- Also over the last 25 years, wildfires have multiplied and intensified due to global warming, and often now jump the wildland-urban interface, burning whole neighborhoods and leaving behind a dangerous toxic home legacy.
- Homeowners whose houses survive such wildfires are often stunned to learn that their homes are a toxic health threat, unlivable and a total loss.
- The multibillion-dollar production and wide-ranging export of plastic building materials and home furnishings, and the dramatic surge in wildfires, has made this a global problem impacting communities in the U.S., China, Australia, Brazil, Canada, Portugal and beyond.
Shipping emissions reduction sheds light on marine cloud geoengineering
- Unprecedented marine heat waves in the North Atlantic have been driven in part by a recent drop in shipping emissions, leading to a reduction in highly reflective marine clouds that had previously masked some of the warming from humanity’s greenhouse gas emissions, studies find.
- New limits on sulfur dioxide emissions from shipping, introduced by the International Maritime Organization in 2020, created an inadvertent “natural experiment” that is helping to improve models of the interaction between atmospheric aerosols, clouds and climate.
- The sulfur dioxide emissions reduction also provides the clearest test to date of marine cloud brightening (MCB) — a controversial geoengineering approach proposed to mitigate climate change. It shows that to be effective and avoid a dangerous termination shock, MCB would need to be continuous and sustained.
- Reducing atmospheric aerosol pollution has major benefits for human health, but will also inevitably lead to an unmasking of more dangerous climate warming. This means that improvements in air quality must simultaneously be coupled with decarbonization, experts say.
African leaders at COP29 demand funding without further debt
BAKU, Azerbaijan — As developing countries grapple with increasing floods, droughts and other climate-related impacts, their limited financial resources are under considerable strain. This situation often leaves many governments with little choice but to borrow money to address the devastating effects of climate change. Developing countries have historically produced very few of the carbon emissions […]
At least 146 dead in back-to-back tropical cyclones in Philippines
Two tropical cyclones recently struck the Philippines one after the other, leaving at least 146 people dead, according to government reports. The country first felt the peak intensity of Severe Tropical Storm Trami (local name Kristine) on Oct. 24. The storm maintained sustained winds of up to 95 kilometers per hour (59 miles per hour) […]
Marshes are cost-effective for protecting coasts: Study
Climate change effects, including rising sea level and increasingly powerful storms, have put many coastal communities at risk. To mitigate damage, governments have responded by building higher seawalls. But a new study finds there is a more cost-effective, green solution: Instead of blocking water with walls alone, absorb it with marshes first. Previous studies suggest […]
At least 94 dead as worst storm in decades hits Spain’s Valencia region
Torrential rains and flash floods have left at least 92 people dead and dozens missing in Spain’s Valencia region, in what is the region’s worst storm in nearly three decades, according to Spain’s Emergency Coordination Center. A man in Malaga and an elderly woman in the neighboring Cuenca region also died. On the evening of […]
Calls for caution as enhanced rock weathering shows carbon capture promise
- Natural rock weathering is a fundamental part of Earth’s carbon cycle but occurs over thousands of years. Enhancing this cycle by spreading fine volcanic rock on agricultural land is a form of geoengineering that could speed up this process and permanently lock away carbon dioxide within decades.
- Startups and research programs are underway across the globe to explore the effectiveness and risks of this climate solution. Spreading rocks such as basalt can sequester carbon and benefit soils, with some studies showing crop yield increases.
- If scaled up, enhanced rock weathering could store gigaton levels of carbon in the future, according to early research. But myriad challenges and uncertainties remain, not least of which is how to accurately calculate and verify how much carbon is being stored, and for how long.
- Some companies are already pushing ahead with deployment, with the idea of profiting from carbon credits, but experts caution that long-term studies are needed to ensure the technique’s efficacy, sustainability and environmental safety.
Six months after its worst floods, Rio Grande do Sul works to bounce back
- A combination of wet El Niño weather and human-induced climate change were key drivers of the worst flooding event in Brazil’s Rio Grande do Sul state earlier this year.
- The flooding affected 90% of the state and displaced more than half a million people.
- Poor land management is also responsible for the region’s vulnerability to floods, as current agricultural practices in the highlands favor runoff and reduce the soil’s ability to soak up water, with lowlands particularly exposed to high waters.
- While some scientists are still deciphering the causes and behavior of the floodwaters, other experts are working to rehabilitate farmland, tackle soil erosion, and source native seeds for ecological restoration.
Tropical cyclones pummel Philippines, India
Two tropical cyclones have barreled through Asia, prompting the evacuation of hundreds of thousands of people in the Philippines and India. Severe tropical storm Trami (local name Kristine) triggered heavy rainfall as it made landfall in the Philippines in the early hours of Oct. 24. It caused widespread flooding and landslides as it rampaged through […]
As 25 Earth vital signs worsen, scientists warn of ‘irreversible climate disaster’
- Earth is inching closer to irreversible climate change according to a recent report by an international group of climate researchers and Earth System scientists.
- Tracking 35 planetary vital signs — used to gauge Earth’s response to human activities — researchers found 25 are at record risk levels, including greenhouse gas concentrations, fossil fuel consumption, rising temperatures, forest loss, and biodiversity decline.
- The authors underline the immediate need for wide-ranging climate action to rein in fossil fuel use and control emissions, alongside other measures to stave off a deepening climate crisis. “We are on the brink of an irreversible climate disaster,” they wrote.
Climate change fueled Hurricane Milton’s rapid intensification
Within just over 24 hours of forming in the Gulf of Mexico on Oct. 6, Hurricane Milton grew from a Category 1 hurricane to a Category 5, the most powerful class of storms. It was a jump in wind speeds of more than 153 kilometers per hour (95 miles per hour) in a day. This […]
Climate change drives rise in rainfall, ‘Christmas typhoons’ in Philippines
The Philippines experienced an increase in “Christmas typhoons” and tropical cyclone-induced rainfall over the last couple of decades, according to the country’s latest climate report.
Drought & climate change force Ethiopia pastoralists to go job hunting
- A severe drought, worsened by climate change, is driving pastoralists in Ethiopia’s Somali region to abandon traditional herding lifestyles in favor of urban labor, leading to significant shifts in their livelihoods.
- Many pastoralists are forced to seek alternative livelihoods in farming, construction and trade, which require new skills and adaptation to urban life.
- Former pastoralists express emotional ties to their traditional way of life and struggle with the demands of new jobs, reflecting the broader impacts of climate change on their identities and futures.
- A land and agriculture expert says nature-based solutions provide an opportunity to help pastoralists adapt to droughts, while government programs are focused on technical support and helping pastoralists achieve alternative livelihoods.
Controversial US marine geoengineering test delayed until next year
- The first-ever field test of ocean alkalinity enhancement in the United States was pushed back to 2025 due to shipping issues. But the geoengineering experiment has also run into public opposition from local environmentalists, commercial fishers and others.
- The test would dump sodium hydroxide (commonly called lye) off the New England coast to study its dispersal as a potential tool for sequestering CO₂.
- Opponents allege this small-scale geoengineering test could harm local wildlife, but researchers say the material will disperse within minutes.
- The scientists say they will also continue to reach out to local communities to alleviate fears over the study.
Arctic sea ice hits summer minimum; Antarctic hovers at new winter lows
- The Antarctic winter sea ice maximum is on track to be the second lowest on record, at 17.15 million square km² (6.62 million mi²), close to the 2023 record low of 16.96 million km² (6.55 million mi²). Some scientists see this as anomalous. Others see it as a shift in the southern polar environment, maybe triggered by climate change.
- The Arctic summer sea ice minimum also stayed low this year, at 4.28 million km² (1.65 million mi²), making it the 7th lowest minimum in the satellite record. So far, 2012 saw the record minimum of 3.41 million km² (1.32 million mi²).
- Polar sea ice losses have global impacts. In one analysis, researchers estimated the planetary cooling effects of Arctic and Antarctic sea ice during 2016-2023 were about 20% and 12% less, respectively, than they were during 1980-1988, leading to almost 15% less cooling power for the planet.
- With about 12% declines of Arctic Ocean ice each decade, researchers predict a nearly ice-free Arctic summer by 2050, allowing more shipping through the Northwest Passage but threatening this unique polar ecosystem. Studies also show the Antarctic ice sheet to be increasingly at risk, particularly Western Antarctica.
Heavy rains in Lake Chad Basin leave hundreds dead across countries
At least 621 people have been killed and thousands more displaced by floods around Lake Chad, which sits at the border region of several countries in Central and West Africa. Since early September, parts of Cameroon, Chad and Nigeria have experienced some of their heaviest rains in decades. Heavy rains have overwhelmed local systems, Justin […]
Bangkok turns to urban forests to beat worsening floods
- Bangkok is launching city forests to help beat flooding by soaking up excess rainwater runoff.
- A new park slated to open in December will feature 4,500 trees, a floodplain and a weir to slow the flow of water; another newly opened $20 million city forest acts as a sponge during the monsoon season.
- Bangkok is sinking, and fast: according to the World Bank, 40% of the Thai capital could be flooded by 2030.
- The key to solving the city’s flooding problem is to learn to live with water, not to rid the city of water, says one landscape architect helping to launch the urban forests.
Bats & bees help ni-Vanuatu predict storms — but will climate change interfere?
- In disaster-prone Vanuatu, Indigenous ni-Vanuatu people traditionally rely on plants and animal species as indicators that predict extreme weather events and help them prepare.
- But climate change is affecting weather patterns, and species’ behavior may impact the accuracy of this knowledge and predictions, elders say.
- Government, national organizations and scientists launched a national booklet and a mobile app to both document these traditional knowledge indicators and assess how climate change is impacting their accuracy.
- Researchers use a citizen science approach that encourages youth and community people’s hands-on participation in documenting species and changes.
Typhoon Yagi death toll reaches 82 after ripping through northern Vietnam
Torrential rains and strong winds from Typhoon Yagi devastated northern Vietnam on Sept. 9, leaving a reported 58 people dead and 732 injured. Dozens more are missing. In the week of Sept. 3, Yagi killed at least 20 people in the Philippines and four more in southern China. The total estimated death toll as of […]
Record drought in Yucatán prompts revival of ancient Maya rain ceremony
- Maya farmers in Yucatán, Mexico, have rekindled a pre-Hispanic ceremony that calls for rain from the god Cháak as the state suffers its worst drought in 50 years.
- The extended dry season has prevented local farmers from generating sufficient harvests to provide enough food to sustain Indigenous people from remote regions.
- In early May, the Yucatán Peninsula experienced a record high temperature of 43.7°C (110.7°F) after an already year-long drought.
- Pollution from industrial pig farms and monocrop plantations is contaminating groundwater systems and cenotes, considered sacred by the Maya and relied upon to supply farms in rural communities.
Will we be ready? Geoengineering policy lags far behind pace of climate change
- The history of geoengineering policymaking has been piecemeal over past decades, with U.N. bodies failing to create or implement rigorous binding international regulatory frameworks for geoengineering management, and with academia and think tanks delivering reports and recommendations that offer little definitive detailed regulatory guidance.
- Now, as climate change impacts intensify, the debate over what safe, effective national and international geoengineering policies should look like has intensified among academics, regulatory and advisory bodies and researchers.
- Meanwhile, scientists continue trying to find out if geoengineering (the deliberate altering of global atmospheric or oceanic conditions), can help cool off a dangerously warming planet without triggering harmful effects.
- Some warn geoengineering is too risky and want field research stopped. Others say research is urgently needed so decision-makers can understand geoengineering options and risks, so as to make informed choices. For now, few definitive road signs exist to guide policymaking.
Conserving & restoring waterways can mitigate extreme urban heat in Bangladesh
- Conserving existing wetlands and restoring urban waterways can be an effective way for urban planners to protect city residents from extreme heat.
- In Dhaka, as in other large cities, paved urban landscapes absorb heat and intensify the risk of heat waves. Areas of cities that are prone to such thermal intensity are known as “heat islands.”
- Urban sprawl frequently fills or covers wetlands and waterways as cities grow.
- Conserving green spaces is important to reducing urban heat and protecting people in cities from extreme heat, but conserving wetlands and waterways is even more effective.
Cloud brightening over oceans may stave off climate change, but with risk
- Marine cloud brightening (MCB), the spraying of sea salt aerosols or other fine particles into clouds to artificially brighten them and increase the sun’s reflectivity, is a proposed strategy to ward off the full effects of climate change.
- However, this solar radiation management (SRM) geoengineering technique is highly controversial, and experts say governance of MCB field experiments and deployment is needed now at the national and international levels.
- Ongoing efforts to include marine cloud brightening under an international anti-marine pollution treaty, the London Protocol, could be one effective route to setting standards for research and field experiments.
- But if MCB is deployed on a large scale, some experts say there is the potential for serious negative effects on the global climate system. These impacts could be especially severe if deployment is uncontrolled and lacks science-based governance.
South Africa adopts a new climate change law
South African President Cyril Ramaphosa recently signed into law a new climate change act, the first of its kind for the country. The legislation aims to both reduce the country’s greenhouse gas emissions and mitigate and adapt to the effects of climate change already baked into the global system. The new law aims to set […]
Uttarakhand villagers thirst for water as tourism, temps & development rise
- An influx of tourists and new residents to Uttarakhand, driven by heat waves and work-from-home options, is straining local resources, particularly water.
- Nearly 12,000 natural springs reportedly have dried up in recent years, with 90% of Uttarakhand’s population depending on these vital water sources.
- Widespread construction for tourism disrupts aquifers and natural water percolation, exacerbating water scarcity and affecting water quality; water sources are further threatened by changing rainfall patterns and rising temperatures.
- Local residents, especially women and marginalized communities, face increased hardships in accessing water amid growing allegations of water diversion by hotels.
Geoengineering gains momentum, but governance is lacking, critics say
- As the climate crisis advances, geoengineering — intentionally modifying Earth systems on a large scale to cool the planet or store additional carbon — is increasingly a hot topic. But an intense debate is raging as to how to govern research and deployment of these deeply contentious strategies.
- Stratospheric aerosol injection (SAI) — involving the release of sunlight-blocking particles such as sulfur dioxide into the lower atmosphere to block the sun’s rays — is at the forefront of a range of geoengineering technologies and approaches.
- Most SAI research to date involves modeling, while small-scale experimentation is foundering. SAI, though likely capable of cooling Earth’s climate, comes laden with governance challenges, myriad uncertainties and knock-on effects to the climate, ecosystems and human health.
- Projected deployment within a decade or two is cause for concern, say experts who warn that policy guidance and regulatory mechanisms at the national and international levels are now patchy at best, leaving huge gaps in oversight, transparency and monitoring of field research and potential deployment.
Cerrado’s current drought impossible without human-caused climate change: Study
- Since early 2000s, Brazil’s Cerrado has been suffering severe drought episodes, with water shortages affecting hydroelectric power, agriculture and water access. Its water supply has also been under pressure from encroaching agriculture and deforestation.
- Analysis of 700 years of climate data indicated an unprecedented drying trend that started around the 1970s, which experts say was made possible by human-induced warming, and not by climate’s natural variability.
- Researchers collected data from stalagmites in one cave in the state of Minas Gerais and built a climate record for the Cerrado.
Scientists are racing to save South Asia’s butterflies from the threat of extinction
- Butterflies are some of Bangladesh’s most prolific pollinators and important ecosystem indicators.
- Insects, including butterflies, are especially vulnerable to climate change and other human-caused ecosystem changes.
- Despite the increasing threat of extinction, few legal protections or conservation initiatives focus on preserving butterflies and other insects.
- South Asian scientists are engaging communities in citizen science to garner attention to often-overlooked butterfly species.
Don’t even study it: Geoengineering research hits societal roadblocks
- As climate change accelerates, some scientists are calling for more field research into solar geoengineering concepts. However, these ideas are running into opposition from other researchers, some governments and the public.
- A series of recent setbacks has put solar geoengineering research on the back foot, attempting to figure out a way to navigate the opposition.
- Proponents of field research say it would help humanity better understand the potential and problems with solar geoengineering, while opponents argue that there are too many risks and it could take our eye off the ball: cutting carbon emissions.
- The debate has spilled into the international arena, pitting nations that support greater research against those that would like to see a solar geoengineering non-use agreement.
Sun block: The promise and peril of solar geoengineering
- Recent research and interest, especially from the U.S. government, has pushed a solar geoengineering idea known as SAI, or stratospheric aerosol injection, to the top of lists of potential ideas to cool the planet. SAI would use fleets of high-flying aircraft to disperse sunlight-reflecting particles, including sulfates, into the stratosphere.
- As climate change worsens and carbon emissions continue to rise, researchers say we must be ready with other potential tools to stave off total catastrophe, such as the disintegration of the West Antarctic Ice Sheet with sea-level rise that would drown coastal cities.
- But critics say any geoengineering is too unpredictable and could allow governments to lower their ambitions on cutting emissions. They also argue that there’s no global governance policy to implement geoengineering justly.
- As debate intensifies, however, some feel it’s only a matter of time, given the current and projected trajectory of warming, until the world seriously considers geoengineering deployment.
Over 2 million people cut off by extreme rain in Bangladesh
More than 2 million people remained cut off in the northeast of Bangladesh after sustained extreme rainfall between May and July. The latest mapping released by the Bangladesh Flood Forecasting and Warning Centre on June 25 showed extensive flooding in the country’s northeast. Prolonged torrential rain and runoff from upstream hilly regions on the India […]
More than 1,300 Muslim pilgrims die in Mecca under 50C heat
The highest temperatures in more than two decades at the holy site of Mecca led to the deaths of more than 1,300 pilgrims during this year’s Islamic Hajj pilgrimage. The annual devotion draws almost 2 million Muslims to the west of Saudi Arabia, which is the birthplace of the Prophet Muhammad and the Islamic faith. […]
As the world burns, can we learn to live with wildfire health risks?
- Climate change is driving or contributing to increased risk of extreme wildfires in many parts of the world, and experts say urgent action on climate change is needed.
- Finding ways to better manage land use can help reduce the likelihood and severity of wildfires: In landscapes where fire is natural, experts say we should bring back historic fire regimes through cultural burning and prescribed burns.
- Experts say more needs to be done to protect vulnerable populations from wildfire smoke, such as those with preexisting medical conditions, pregnant women, children and seniors, who may be impacted even thousands of miles from a fire’s source.
- Smoke prediction apps, early-warning systems and air filtration systems can help people reduce smoke exposure.
The health impacts of escalating megafires are everyone’s problem
- Increases in extreme wildfires in many parts of the world are fueling concerns over the impacts of smoke on human health, with global warming, forest management and land-use change the primary drivers of increasing wildfires.
- Similar to other types of air pollution, wildfire smoke is associated with a wide range of short-term health impacts, especially for vulnerable groups such as the elderly and people with preexisting medical conditions.
- Wildfire smoke is increasingly adding to the cumulative air pollution burden experienced by modern industrial societies — even in remote or rural areas.
- Emerging evidence also suggests wildfire smoke may have long-term health impacts and contribute to increased risk of chronic conditions.
Death and displacement as fatal storms hit Sri Lanka
Sri Lanka recorded 24 deaths in the first 10 days of June as most of the country of 20 million grappled with an extreme start to the island’s main monsoon season. Data from Sri Lanka’s Disaster Management Center showed 206,000 people were affected by flooding and landslides across the country’s 25 districts. Most local authorities […]
Marshallese worries span decades — first nuclear tests, now sea-level rise
- The Marshall Islands were the site of numerous U.S. nuclear tests in the 1950s that displaced communities and altered their way of life.
- Locals across the islands and atolls are now at risk of evacuation and losing more of their ties to the land if sea-level rise continues at its current rate.
- For many Marshallese elders, their connection to the land is deeply rooted in their mind, body and soul: It is an integral part of their identity and culture.
- Elders talk about their concerns for the future and explain their intimate connection to their land.
Polar warning: Warming temperatures mean more than melted ice
- The Arctic and Antarctic are changing rapidly in response to global warming, with scientists striving to understand how escalating impacts on these unique regions impact the rest of the world. This story summarizes three significant recent studies.
- A new comprehensive greenhouse gas budget for Arctic terrestrial ecosystems estimates that the permafrost-covered region now emits more greenhouse gases — including carbon dioxide (CO₂), methane (CH₄) and nitrous oxide (N₂O) — than it stores. That trend is expected to accelerate if Arctic warming worsens further.
- Another recent study looked at the ice shelves edging the Antarctic continent, which act as brakes slowing the flow of glacial ice into the ocean that adds to sea-level rise. Although many factors impact the mass and stability of these shelves, a new model shows El Niño warming events help melt ice from below to increase shelf loss.
- Scientists also analyzed a record-breaking heat wave hitting Antarctica in March 2022, when temperatures soared by up to 40°C (72°F) above normal. They determined that this “black swan” event is having long-term impacts on the region’s ecosystems. The odds are that more such high-heat events will occur in future.
In Brazil’s Cerrado, aquifers are losing more water than they can replace
- A new monitoring model combining satellite images with artificial intelligence can identify variations in the volume of Brazilian aquifers.
- The Urucuia, one of the largest aquifers in the Cerrado biome, saw its water volume decrease by 31 cubic kilometers (7.43 cubic miles) over two decades; most of it is in western Bahia, where monoculture plantations are gaining ground.
- According to researchers, Brazil’s groundwaters—which cover 2.84 million square kilometers (1 million square miles) — remain “an unknown resource,” and few tools exist to monitor them.
Report ranks 60+ ideas, including geoengineering, to save the Arctic
- Given that the serious impacts of climate change are rapidly escalating, some scientists, backed up increasingly by governments, are looking into extreme measures such as geoengineering to slow the rate of change.
- A new report examines 61 climate mitigation ideas for the Arctic, including geoengineering.
- The report ranked tried and true measures, like restoring peatlands, the highest, but some geoengineering ideas, such as solar geoengineering, also ranked high.
- Researchers say, however, that while geoengineering ideas may be worth studying, the goal right now must be to aggressively cut emissions. Some also fear that geoengineering will become a costly distraction, diverting attention from the need for fossil fuel companies to cut production, and for decarbonization of the economy.
Bangladeshi farmers find zucchini’s high yields & low costs palatable
- Though long considered “foreign” to Bangladeshi farmers, zucchini squash is now cultivated among growers who value its high productivity, lower production cost and short growing time.
- Farmers living in dry regions and river islands prefer to cultivate this vegetable, where watering the plant is an issue.
- Bangladesh Agricultural Extensions expects more zucchini squash cultivation in the coming days based on farmers’ enthusiasm and growing local demand in the market.
From polling stations to weather stations, the heat is on in India (commentary)
- Parts of India are facing a heatwave, for which the heat in the state of Kerala is a curtain raiser. Kerala experienced its first recorded heatwave amid the ongoing election campaign.
- Heatwaves, droughts and floods do not distinguish along political lines. If the destruction is across board, the mitigating action also has to be across political lines, writes Mongabay-India’s Managing Editor, S. Gopikrishna Warrier, in this commentary.
- Climate change poses economic, social and political challenges, influencing election discourse and policy agendas.
- This post is a commentary. The views expressed are those of the author, not necessarily Mongabay.
In largest ever study, Indigenous and local communities report the impacts of climate change
- Indigenous peoples and local communities are reporting a series of tangible and nuanced impacts of climate change, according to a new study.
- The study collected 1,661 firsthand reports of change in sites across all inhabited continents and aggregated the reports into 369 indicators of climate change impacts, including changes in precipitation, plant cultivation and marine ecosystems.
- Existing measures to track climate change impacts are barely able to relate to the diverse and complex ways in which local people experience and observe environmental changes, according to the authors. For instance, instrumental measurements might capture changes in rainfall patterns but miss crucial relationships between climate change awareness, sensitivity and vulnerability.
- This research constitutes the largest global effort by Indigenous peoples and local communities to compile and categorize local observations of climate change and its impacts.
Panama delays promised relocation of sinking island community
- The government of Panama continues to delay the process of relocating almost 1,300 Indigenous Guna inhabitants from an island experiencing rising sea levels due to climate change.
- The lack of space on the tiny Caribbean island of Gardi Sugdub means there’s no room to relocate, and a new site on the mainland for the community has been in the works since 2019.
- But plans for the relocation have been repeatedly delayed due to administrative issues, previous COVID-19 restrictions and poor budgeting, leaving residents skeptical that government promises will be upheld.
- Members of this fishing community have also expressed concern about the relocation site, which is a 30-minute walk from the coast, and about the design of the new homes, for which the government didn’t seek Guna input.
Faced with an extreme future, one Colombian island struggles to rebuild
- In 2020, Hurricane Iota destroyed most of the housing and infrastructure on the Island of Providencia, in Colombia’s Caribbean archipelago of San Andres.
- Although the government sent aid and rebuilt homes, communities complained they were left out of the consultation process and that the reconstruction had been poorly done, without addressing the island’s increased vulnerability to climate change.
- Locals sued the government, obtaining a reopening of consultations, which the new left-wing government has agreed must reach a solution that accords with the islanders’ traditional customs.
- More than 700 islands in the Caribbean could be increasingly exposed to more extreme weather, as climate change threatens to make events such as hurricanes more destructive.
Rainwater reserves a tenuous lifeline for Sumatran community amid punishing dry season
- Kuala Selat village lies on the coast of Indragiri Hilir district on the Indonesian island of Sumatra.
- In the first half of the year, residents of the village arrange buckets and drums to collect rainwater to meet their daily needs.
- They will then stockpile water to last through the dry months from June-September, but a longer dry spell has led to an acute shortage of water.
- Residents say they believe the water crisis in the village was linked to bouts of diarrhea, and that many fled the village during an outbreak.
As fires ravaged Indonesia in 2023, some positive trends emerged, data show
- Indonesia’s 2023 fire season saw 1.16 million hectares (2.87 million acres) of land and forest go up in flames, and while this was five times higher than in 2022, experts highlight a positive trend.
- The fires were exacerbated by an intense El Niño weather system, unlike in 2022; the last time similar conditions prevailed, in 2019, the area affected by fires was much larger, suggesting fire mitigation efforts may be working.
- Most of the burning occurred in scrubland and areas of degraded forest rather than in intact forests, meaning greenhouse gas emissions from the burning were also much lower than in 2023.
- But a worrying trend highlighted by the numbers is that severe fires are now occurring in four-year cycles, intensified and exacerbated by the impacts of a changing climate.
We need rapid response support for Indigenous peoples in the face of growing extreme weather events (commentary)
- Climate change can sometimes feel distant and intangible, but the increasingly frequent extreme weather events in tropical forest regions like the Amazon and Congo Basin are already having very real-world impacts on Indigenous and other local communities in these areas.
- While Indigenous and grassroots organizations are often the first responders and are best placed to know the needs of their communities, they face huge challenges in accessing heavily bureaucratic disaster response funding.
- This is why we are calling for the establishment of a dedicated fit-for-purpose rapid response fund for them to be able to respond and recover from such events.
- This post is a commentary. The views expressed are those of the author, not necessarily Mongabay.
‘Another catastrophe’: Flooding destroys Indigenous agroforestry projects in Peru’s Amazon
- Heavy rains likely caused by El Niño began flooding Peru’s Ene River at the beginning of March, with waters reaching around 2 feet high and spreading across 5,000 hectares (12,355 acres) of land occupied by around 300 Indigenous Asháninka families.
- Families in five Asháninka communities lost their homes as well as years of work on successful and sustainable agroforestry projects for cacao, coffee and timber, among other products.
- The flood waters have only recently receded, so a long-term or even mid-term plan for recovering their agroforestry projects hasn’t been developed yet.
- The Asháninka have faced many other setbacks over the years, from drug trafficking groups to unsustainable development projects, but have often overcome them to defend their territory. This flood marks the latest setback.
Critics fear catastrophic energy crisis as AI is outsourced to Latin America
- AI use is surging astronomically around the globe, requiring vastly more energy to make AI-friendly semiconductor chips and causing a gigantic explosion in data center construction. So large and rapid is this expansion that Sam Altman, the boss of OpenAI, has warned that AI is driving humanity toward a “catastrophic energy crisis.”
- Altman’s solution is an audacious plan to spend up to $7 trillion to produce energy from nuclear fusion. But even if this investment, the biggest in all of history, occurred, its impact wouldn’t be felt until mid-century, and do little to end the energy and water crises triggered by AI manufacture and use, while having huge mining and toxic waste impacts.
- Data centers are mushrooming worldwide to meet AI demand, but particularly in Latin America, seen as strategically located by Big Tech. One of the largest data center hubs is in Querétaro, a Mexican state with high risk of intensifying climate change-induced drought. Farmers are already protesting their risk of losing water access.
- As Latin American protests rise over the environmental and social harm done by AI, activists and academics are calling for a halt to government rubber-stamping of approvals for new data centers, for a full assessment of AI life-cycle impacts, and for new regulations to curb the growing social harm caused by AI.
Oman’s mountain oases offer ancient farming lessons for a warming future
- Traditional oasis agriculture in Oman’s northern mountains is an outstanding example of sustainable land-use in dryland ecosystems.
- But major socioeconomic development throughout Oman over the past 50 years means that traditional agricultural practices, more than a millennium old, are changing too.
- Climate change is also affecting the types of crops that can be grown, particularly at higher altitudes.
- The high value of traditional agricultural products, agritourism, and new cash crops offer ideas on how to sustain the economic viability of these mountain oases.
Brazilian youngsters discuss how they are tackling the climate emergency
- Affected by drought, pollution, high waters and floods, young people from different Brazilian states describe how climate change is impacting their routines and causing illness, malnutrition, displacement and school disruption.
- According to a UNICEF report, 2 billion children and adolescents in the world are exposed to risks arising from the climate emergency; in Brazil, there are 40 million affected children and adolescents — 60% of Brazilians under 18.
- According to experts, the climate crisis is a crisis of the rights of children and adolescents, as it affects everything from the right to decent housing and health care to education and food, leading to problems in child development and learning abilities.
Studies still uncovering true extent of 2019-20 Australia wildfire catastrophe
- Australia’s 2019-20 bushfires burned with unprecedented intensity through a total of 24 million hectares (59 million acres), an area the size of the U.K.
- New research shows total costs incurred to the tourism industry from that single bushfire season may be 61% higher than previously calculated.
- Up to 1.5 billion wild animals may have perished in the fires, and new research is uncovering the cost to individual species as a result of the fires.
- One study published shows 15% of all known roost locations of the gray-headed flying fox, Australia’s largest bat species, may have been directly impacted by the fires.
Study on Brazilian heat wave deaths shows gender & racial disparities
- A new study estimates that the deaths of nearly 50,000 people in Brazil in recent decades could be attributed to the occurrence of heat waves, and it points out that these extreme events have become increasingly frequent.
- The paper reveals that Blacks, Browns, females, older adults and those with lower educational levels are the most affected population subgroups, suggesting that the impacts of heat waves are felt unevenly, thus exposing socioeconomic inequalities.
- The researchers analyzed data from 14 metropolitan regions with a population of 74 million people, representing nearly one-third of Brazil’s population.
- This research is important because it joins others in analyzing racial and gender dimensions of the populations most vulnerable to extreme events, the scientific coordinator at Iyaleta Research Association says.
In climate-related flooding, a Ugandan river turns poisonous
- Uganda’s Nyamwamba river, in the Rwenzori Mountains, has begun to flood catastrophically in recent years, partly due to climate change.
- Along the river are copper tailings pools from an old Canadian mining operation, which are becoming increasingly eroded by the flooding.
- According to a series of studies, these tailings have been washing into the water supply and soil of the Nyamwamba River Basin, contaminating human tissue, food and water with deadly heavy metals.
- Cancer rates are higher than normal near the tailings pools, and scientists fear that as the flooding continues to worsen, so will the health crisis.
As lightning strike fatalities increase, Bangladesh still has no reliable preventive measures
- Between 2011 and 2020, lightning strikes claimed the lives of 2,164 people, or nearly four people every week, in Bangladesh, according to the country’s disaster management department. However, a Bangladeshi NGO reports at least a thousand more lightning related fatalities between 2010 and 2021.
- Researchers linked the increased frequency of lightning with climate change; as for the increased death toll, they blamed the government’s inefficient protection measures, including the lack of tall trees.
- To reduce the number of fatalities, the government has started working on long-term solutions, such as installing lightning arresters and growing palm trees. Nevertheless, a significant sum of money is being squandered and nothing functions as expected, say experts.
Climate change brings a river’s wrath down on western Uganda
- Since the 1960s, Uganda’s climate has warmed by an average of 1.3°C (2.3°F).
- The warming is partly responsible for an increasing number of catastrophic floods on the Nyamwamba River, in western Uganda’s Rwenzori Mountains.
- In 2020 alone, 173,000 people were affected by flooding in Kasese district, when 25,000 houses were destroyed.
- Many of those rendered homeless by the floods continue to languish in temporary housing camps four years on.
Locals at the mouth of the Amazon River get a salty taste of climate change
- Ocean rise and changes in the Amazon River are ruining the way of life in an archipelago close to where the Amazon River runs into the Atlantic.
- In Bailique, locals are experiencing longer periods of salty water, a natural phenomenon that is becoming more usual due to climate change.
- Açaí berries, the prime economic drive of the community, are becoming saltier, and palm trees are being eaten by the erosion caused by changes in the Amazon River’s flow.
- Part of the population has already left the region, as others struggle to adapt to the new landscape.
Freeze on Russian collaboration disrupts urgently needed permafrost data flow
- Accelerating Arctic warming threatens to thaw more and more carbon-rich permafrost and release vast amounts of greenhouse gases into the Earth’s atmosphere, but scientists don’t know when such a tipping point event might occur.
- The potential for large and abrupt permafrost emissions adds urgency to better understanding the factors that could turn permafrost from a carbon sink into a carbon source.
- However, more than half of all Arctic permafrost lies under Russian soil, and a two-year freeze on collaborations between Russian scientists and the international scientific community — prompted by the Russian invasion of Ukraine on Feb. 24, 2022 — is disrupting data flows and hamstringing the polar research community.
- Despite an uncertain geopolitical landscape, scientists are determined to close the data gap with work-arounds such as pivoting to “proxy” field sites, ramping up remote sensing with AI, and mining archived data for new insights. But reintegrating Russian research with other Arctic research is a priority of the scientific community.
Climate change, extreme weather & conflict exacerbate global food crisis
- Global food insecurity has risen substantially since pre-pandemic times, exacerbated by extreme weather, climate change, war and conflict.
- What the U.N. World Food Program calls “a hunger crisis of unprecedented proportions” plays out differently around the world.
- In this story, three of Mongabay’s Y. Eva Tan Conservation Reporting Fellows detail the local situation in their region – from rising inflation and flooding in Nigeria to diminished local food production in Suriname and the environmental and socioeconomic effects of commercial food production in Brazil.
- “If we do not redouble and better target our efforts, our goal of ending hunger, food insecurity and malnutrition in all its forms by 2030 will remain out of reach,” write the authors of the U.N. Food and Agriculture Organization (FAO) 2023 report on global food security and nutrition.
As climate disasters claim their children, Bangladeshi mothers seek safety in bigger families
- Climate change is exacerbating child mortality in flood-prone areas of Bangladesh, prompting mothers to have larger families as a response to the fear of losing children to disasters.
- Studies indicate an 8% surge in infant mortality risk in flood-prone regions, resulting in more than 150,000 lives lost between 1988 and 2017.
- While Bangladesh has seen improvements in disaster management, reduced cyclone deaths, and progress in health for mothers and children, climate change poses new threats, especially to vulnerable coastal communities lacking adequate protection.
- A National Adaptation Plan offers solutions such as water conservation and livelihood opportunities, but challenges like funding, coordination and transparency need attention for effective implementation, experts say.
The new Arctic: Amid record heat, ecosystems morph and wildlife struggle
- Every species of animal and plant that lives or breeds in the Arctic is experiencing dramatic change. As the polar region warms, species endure extreme weather, shrinking and altered habitat, decreased food availability, and competition from invading southern species.
- A wide array of Arctic organisms that rely on sea ice to feed or breed during some or all of their life cycles are threatened by melt: Over the past 40 years, the Arctic Ocean has lost about 75% of its sea ice volume, as measured at the end of the summer melt season. This translates into a loss of sea ice extent and thickness by half on average.
- Researchers note that the rate of change is accelerating at sea and on land. While species can adapt over time, Arctic ecosystem alterations are too rapid for many animals to adapt, making it difficult to guess which species will prevail, which will perish, and where.
- The only thing that could limit future extinctions, researchers say, is to quickly stop burning fossil fuels, the main driver of climate change.
In Bangladesh, sunflower grows where other crops don’t amid increasing salinity
- The changing climate, rising sea levels and other anthropogenic factors are forcing a vast area of Bangladesh’s coastal zone to remain barren due to the presence of salinity in arable land.
- Overcoming these hurdles, coastal farmers, with the support of the government and various nongovernmental organizations, are now farming sunflowers and benefiting from the alternative crop.
- Bangladesh currently produces only 10% of the oilseeds it uses; imports from different countries meet the rest of the demand.
- The government estimates that the country could produce sunflower to meet the local demand for cooking oil by up to 26% by cultivating the oilseed in saline-prone zones.
Ocean heating breaks record, again, with disastrous outcomes for the planet
- New research shows that ocean temperatures are hotter than ever in the modern era due to human-driven global warming.
- High ocean temperatures are placing a strain on marine life and biological processes while also increasing extreme weather events on land.
- The world is also seeing an escalation in the frequency and intensity of marine heat waves, events in which sea temperatures exceed a certain threshold for five days or more.
Java’s crumbling coastline and rising tide swamp jasmine flower trade
- Growers of jasmine flowers in lowland areas of Indonesia’s Central Java province are vulnerable to coastal erosion and rising sea levels.
- Research published in 2022 showed Central Java’s Semarang was among the fastest-sinking major cities in the world.
- Jasmine grower Sobirin has altered his home on three occasions since 2010, raising the floor to adapt to increasing tidal surges.
Con Chim: A window into Vietnam’s past and future beyond rice fields
CON CHIM, Vietnam —In response to escalating climate concerns, Vietnam is rethinking its approach to agriculture by reducing rice farming and adopting nature-based practices. Con Chim, once an overlooked region, is now emerging as a beacon of sustainable farming. Watch this video to learn more about how this transformation is setting a new standard for […]
A Mekong island too tiny for industrial farming now points to Vietnam’s future
- In the decades following the U.S. war in Vietnam, the Vietnamese government championed intensive farming methods that boosted rice harvests and turned the country into an export powerhouse.
- While much of the Mekong Delta was reshaped to support intensive farming, the coastal island of Con Chim was deemed too small to be worth installing the necessary dikes and sluice gates, leaving farmers there to continue traditional patterns of wet and dry season agriculture and fishing.
- Now, in an era dominated by climate concerns, Vietnam plans to scale back rice farming and shift to more nature-based agricultural practices. Once a forgotten backwater, Con Chim now stands as a rare guidepost to a more sustainable agricultural future.
- This story was produced in partnership with the Global Reporting Program at the University of British Columbia’s School of Journalism, Writing, and Media.
As Sri Lanka floods swell with climate change, so does human-crocodile conflict
- Sri Lanka is among the countries most vulnerable to climate change, with long drought spells, receiving intense rain during a shorter period with a marked increase in flood events.
- During flooding, crocodiles inhabiting rivers tend to reach land and move closer to human settlements, increasing the risk of encounters with people.
- The Nilwala River flows through southern Sri Lanka and recent flood events have increased croc encounters with humans in the Matara district and escalated threats to human safety, resulting in disaster management responses.
- During recent flooding events, no serious incidents linked to crocodiles were reported, but wildlife officials had to chase crocs away from riverbanks, highlighting the need for an immediate and durable solution for the human-crocodile conflict around the Nilwala River area.
Salmon and other migratory fish play crucial role in delivering nutrients
- Pacific salmon can play a key role in transporting nutrients from marine to freshwater and terrestrial ecosystems.
- In the past, Pacific salmon and other anadromous fish that spawn in freshwater and spend part of their life in the ocean likely played a much larger role in global nutrient cycles, scientists find.
- But today, many populations of Pacific salmon and other anadromous fish are under pressure from habitat loss, overfishing, climate change, dams and other pressures that have greatly reduced their numbers, weight and ability to migrate freely.
- Population declines could further curtail their role in global nutrient transport in future, with increasing consequences, especially for nutrient-poor ecosystems that have relied in the past on migratory fish for significant nutrient additions.
Detailed NASA analysis finds Earth and Amazon in deep climate trouble
- A NASA study analyzed the future action of six climate variables in all the world’s regions — air temperature, precipitation, relative humidity, short- and long wave solar radiation and wind speed — if Earth’s average temperature reaches 2° Celsius (3.6° Fahrenheit) above preindustrial levels, which could occur by 2040 if emissions keep rising at current rates.
- The authors used advanced statistical techniques to downscale climate models at a resolution eight times greater than most previous models. This allows for identification of climate variations on a daily basis across the world, something essential since climate impacts unfold gradually, rather than as upheavals.
- The study found that the Amazon will be the area with the greatest reduction in relative humidity. An analysis by the Brazilian space agency INPE showed that some parts of this rainforest biome have already reached maximum temperatures of more than 3°C (5.4°F) over 1960 levels.
- Regardless of warnings from science and Indigenous peoples of the existential threat posed by climate change, the world’s largest fossil fuel producers, largely with government consent, plan to further expand fossil fuel exploration, says a U.N. report. That’s despite a COP28 climate summit deal “transitioning away from fossil fuels.”
Causeway threatens mangroves that Philippine fishers planted as typhoon shield
- The city of Tacloban in the central Philippines was ground zero for Typhoon Haiyan, one of the most powerful tropical cyclones ever recorded and the deadliest in the Philippines’ modern record.
- A decade after the storm, the city is moving forward with controversial plans to build a road embankment and land reclamation project that proponents say will help protect the city from storm surges.
- Opponents of the plan say it threatens local fisheries, will disrupt natural storm protection measures like mangroves, and is poorly designed as a barrier against storms.
- The plan will also result in the relocation of a coastal village of 500 households, who have been active stewards of the bay’s mangrove forests.
African leaders & activists will bring new demands, hopes to COP28
- As world leaders prepare to meet in Dubai for COP28, African activists bring new hopes and expectations following the first-ever Africa Climate Summit (ACS) that took place in Nairobi in September.
- The ACS resulted in a historic Nairobi Declaration, calling on the global community to fulfill promises for climate financing, adaptation, mitigation and emissions reduction.
- Activists say they hope COP28 will result in decisive action to implement the Loss and Damage Fund that aims to support countries most vulnerable to the effects of climate change, but skeptics say they worry this summit will result in the same old story, especially as the COP28 presidency is held by an oil baron.
Can impermanent carbon credits really offset forever emissions?
- A team of researchers has put forth a method that they say makes it possible to compare credits for carbon from forests projects against more permanent storage solutions.
- The carbon emissions that these credits are meant to offset can last for hundreds, if not thousands, of years in the atmosphere. Forests, by comparison, are subject to fires, disease and deforestation, meaning that their climate benefits can be more temporary than longer-term solutions, such as direct air carbon capture.
- By “discounting” the credits from forest carbon projects based on conservative upfront estimates of how long a forest will safeguard or sequester carbon, the authors say that “like-for-like” comparisons would be possible.
- The team published their work Oct. 30 in the journal Nature Climate Change.
Salty wells and lost land: Climate and erosion take their toll in Sulawesi
- Coastal erosion on the west coast of Indonesia’s Sulawesi Island is so advanced that seawater has penetrated the groundwater supply that tens of thousands use for drinking water.
- The communities have yet to be served by utility water provision, so families are resorting to costly supplies of water from private distributors.
- Research shows that rising seas and more frequent and powerful storms will accelerate coastal abrasion, raising burdens shouldered by the world’s coastal communities.
Fish out of water: North American drought bakes salmon
- An unprecedented drought across much of British Columbia, Canada, and Washington and Oregon, U.S., during the summer and fall months of June through October could have dire impacts on Pacific salmon populations, biologists warn.
- Low water levels in streams and rivers combined with higher water temperatures can kill juvenile salmon and make it difficult for adults to swim upriver to their spawning grounds.
- Experts say relieving other pressures on Pacific salmon and restoring habitat are the best ways to build their resiliency to drought and other impacts of climate change.
Forests hold massive carbon storage potential — if we cut emissions
- A new study finds forests could potentially store 226 billion metric tons of carbon if protected and restored, or about one-third of excess emissions since industrialization.
- Nearly two-thirds of this potential lies in conserving and letting existing forests mature.
- The authors say that restoring deforested areas through community-driven approaches such as agroforestry and payments for ecosystem services is essential.
- Planting trees can’t replace cutting fossil fuel emissions, as climate change threatens forests’ carbon uptake.
The Cloud vs. drought: Water hog data centers threaten Latin America, critics say
- Droughts in Uruguay and Chile have led residents to question the wisdom of their governments allowing transnational internet technology companies to build water-hungry mega-data centers there.
- As servers process data, they need lot of water to keep them cool. But if demand grows as expected, the world will need 10-20 times more data centers by 2035, and they’ll be using far more water. Many will likely be built in economically and water-challenged nations already facing climate change-intensified droughts.
- Latin American communities fear that this “data colonialism” will consume water they desperately need for drinking and agriculture, and are critical of their governments for giving priority treatment to transnational tech giants like Google and Microsoft, while putting people’s access to a basic human necessity at risk.
- Surging digital data use by 2030 may cause each of us in the developed world to have a “digital doppelganger,” with our internet use consuming as much water as our physical bodies. But much of the stored data is “junk.” Critics urge that nations insist on tougher regulations for transnational companies, easing the crisis.
Battling desertification: Bringing soil back to life in semiarid Spain
- Southeastern Spain is experiencing the northward advance of the Sahara Desert, leading to declining rainfall, soil degradation, and climate change-induced droughts, threatening agricultural lands that have been farmed for many centuries.
- Local farmers recently began adopting regenerative agriculture practices to better withstand long, persistent droughts punctuated by torrential rains and subsequent runoff.
- Many farmers in the region have formed a collaborative group called Alvelal to address encroaching desertification, depopulation, and the lack of opportunities for youth.
- Alvelal members manage more than 15,000 hectares (37,000 acres) of farmland using regenerative agriculture techniques and aim to expand further, conserving more farmland against the onslaught of climate change, while restoring natural corridors and promoting biodiversity.
Meet the farmers in southeastern Spain fighting desertification
LOS VÉLEZ, Spain — Southeastern Spain faces a pressing environmental challenge: the encroachment of the Sahara Desert. This northward advance results in reduced rainfall, soil degradation, and severe droughts driven by climate change, jeopardizing centuries-old agricultural lands. In response to these challenges, local farmers are increasingly turning to regenerative agriculture practices. These innovative methods aim […]
Record North Atlantic heat sees phytoplankton decline, fish shift to Arctic
- Scientists warn that record-high sea surface temperatures in the North Atlantic Ocean this year are having consequences for sea life.
- As marine heat waves there have worsened over the years, populations of phytoplankton, the base of the oceanic food chain, have declined in the Eastern North Atlantic.
- With experts predicting more heat anomalies to come, North Atlantic fish species are moving northward into the Arctic Ocean in search of cooler waters, creating competition risks with Arctic endemic species and possibly destabilizing the entire marine food web in the region.
- Lengthening and intensifying marine heat waves around the globe are becoming a major concern for scientists, who warn that the world will see even greater disruptions to ocean food chains and vital fisheries, unless fossil fuel burning is curtailed.
Kenya’s Lake Victoria floods leave orphaned children to run their households
- Beginning in 2019, devastating floods on the shores of Kenya’s Lake Victoria have inundated homes, displaced families and left some orphaned children in charge of caring for their siblings and running the household.
- Many families continue to live in makeshift camps, hoping to rebuild and renew their lives; the effects of the flooding have been particularly harsh on children who have had to drop out of school or work to ensure the family’s survival.
- Experts attribute the floods to a combination of factors, including climate change, increased rainfall and lack of vegetation to control runoff; in 2015, an international research team predicted swiftly rising waters that could harm the region.
- UNICEF reports a concerning increase in the number of children affected by flooding in recent years, as climate change leads to more crises that can disrupt education, destabilize families and leave long-term effects on child development and psychosocial well-being.
As oceans warm, marine heat waves push deep beneath the surface, study shows
- A new study found that the ocean experiences the most intense marine heat waves at a depth of between 50 and 250 meters (160 and 820 feet), where a large portion of the ocean’s biodiversity can be found.
- It also found that parts of the ocean between 250 and 2,000 m (6,600 ft) had less intense but longer marine heat waves, with a duration twice as long as at the surface.
- The intensity and duration of marine heat waves could have widespread effects on marine biodiversity, increasing the likelihood of species displacement and mortality, the study suggests.
How climate change could jeopardize Brazilian coffee
- Drier and hotter conditions are wreaking havoc on arabica coffee production in São Paulo and Minas Gerais, with climate change and deforestation in the Brazilian Amazon and Cerrado being the main causes.
- Since 2010, temperatures in coffee-producing municipalities have risen by 1.2° Celsius (2.16° Fahrenheit) during the flowering period; projections indicate more days of extreme temperatures (above 34°C, or 93°F) by 2050.
- Producers are betting on agroforestry and shading techniques to save production and improve natural pollination.
Indonesian children locked out of school as El Niño haze chokes parts of Sumatra & Kalimantan
- Poor air quality over several Indonesian cities and outlying rural areas has forced local authorities to cut class times or close schools altogether.
- Air pollution on Oct. 5 in one area of Palangkaraya far exceeded the level at which air quality is classified dangerous to human health.
- The government of Jambi province has closed schools until Oct. 7, after which it will review whether to reopen for in-person teaching.
Sumatran province hangs on for late rain as El Niño fires bring heat and sickness
- Wildfires have returned to Indonesia as the country enters its dry season amid an El Niño year.
- In Palembang city, new respiratory infections will likely soon eclipse the total diagnosed in 2022.
- Meteorology officials expect the monsoon to begin in parts of Sumatra and Borneo islands in October, but warn dry conditions will persist in much of Indonesia until November.
Salinity hinders Bangladesh agriculture; groups respond with seeds & information
- Bangladesh is the fourth-highest rice-producing country in the world, but much of that production is threatened by salinity.
- More than 30% of the cultivable land in Bangladesh is in the coastal area; a comparative study of the salt-affected area showed that of 2.86 million hectares (7.1 million acres) of coastal and off-shore lands, about 1.056 million hectares (2.6 million acres) — an area roughly the size of Lebanon — of arable lands are affected by varying salinity, hampering agricultural production.
- In the coastal zones, farmers mainly cultivate low-yielding, traditional rice varieties during the wet season, while in the dry season (January- May), most of the land remains fallow because of soil salinity.
- To cope with the situation, government and nongovernmental organizations are introducing different types of saline and extreme weather-tolerant crop varieties to use the farmland yearly.
On Jakarta’s vanishing shoreline, climate change seen abetting child marriages
- Marriage before the age of 18 is classified as a form of gender-based violence by the United Nations, but is commonly practiced in low-income communities to mitigate household economic pressures.
- On Jakarta’s northern coastline, child marriage is common in fishing communities responding to inflationary pressures and declining stocks of fish in near-shore waters.
- Janah, now 23, fears she lacks the agency to break a cycle that saw her married at the age of 16.
Climate change detectable in daily rainfall patterns, deep-learning model finds
- Researchers have developed a deep-learning AI model that predicts how global warming is affecting daily precipitation patterns around the world.
- Using the model, scientists found that every year since 2015 daily rainfall deviated from natural variability at least 50% of the time as a result of rising temperatures.
- Research has long focused on climate change’s long-term impacts such as annual temperature increase or precipitation rates.
- However, studies in recent years have observed how rising temperatures are altering daily weather patterns as well.
Indigenous peoples undersupported on frontline of hotter, drier, fiery world
- It’s official: This has been the warmest June-July-August on record, and much attention has focused on the urgent need to achieve climate resilience in impacted urban areas. But how are rural Indigenous communities around the world living with these new extremes?
- Indigenous peoples — from Africa to the Arctic to Central America — report unprecedented heat waves, droughts, storms and wildfires, extremes that are impacting the wildlife they hunt, the plants they gather, crops they grow, livestock they raise, and their very survival.
- Given that many Indigenous peoples live close to the land and depend directly on local resources, they’re especially vulnerable to the massive changes now sweeping our planet.
- But while Indigenous peoples are considered by many researchers and activists to be Earth’s best land stewards, their communities aren’t receiving the funding or resources necessary to adapt to a hotter, drier, stormier, fiery world, often due to the lack of access to their traditional lands.
U.N. ‘stocktake’ calls for fossil fuel phaseout to minimize temperature rise
- The U.N. climate change agency published a new report Sept. 8 confirming that while there has been progress on climate change mitigation since the landmark Paris Agreement in 2015, more needs to be done to limit the global rise in temperatures at 1.5°C (2.7°F) above pre-industrial levels.
- The report is an element of the global stocktake, a Paris Agreement-prescribed inventory of progress toward climate-related goals.
- The authors of the report called for phasing out fossil fuels and ramping up renewable energy.
- The global stocktake process will conclude at the U.N. climate conference (COP28) beginning Nov. 30 in Dubai, United Arab Emirates.
A tale of two biomes as deforestation surges in Cerrado but wanes in Amazon
- Brazil has managed to bring down spiraling rates of deforestation in the Amazon Rainforest in the first half of this year, but the neighboring Cerrado savanna has seen a wave of environmental destruction during the same period.
- The country’s second largest biome, the Cerrado is seeing its highest deforestation figure since 2018; satellite data show 3,281 hectares (8,107 acres) per day have been cleared since the start of the year through Aug. 4.
- The leading causes of the rising deforestation rates in the Cerrado are a disparity in conservation efforts across Brazil’s biomes, an unsustainable economic model that prioritizes monocultures, and escalating levels of illegal native vegetation clearing.
- Given the importance of the Cerrado to replenish watersheds across the continent, its destruction would affect not just Brazil but South America too, experts warn, adding that the region’s water, food and energy security are at stake.
Beach heat: Study shows increasing temperature extremes on Brazil’s coast
- By analyzing temperature patterns at five points along the Brazilian coast over the last 40 years, scientists confirmed the impacts of global warming on the country: hotter summers, more heat waves and greater thermal amplitude throughout the day.
- On the coast of Espírito Santo state, the frequency of daily occurrences of extreme temperatures and heat waves increased by 188% during the period studied; Rio Grande do Sul saw an increase of 100% and São Paulo, 84%.
- Such climate extremes impact the health of people, plants and animals directly and indirectly, including changes in viral cycles.
Can land titles save Madagascar’s embattled biodiversity and people?
- Through its Titre Vert or Green Title initiative, the Malagasy government is opening up a path to land ownership for its most vulnerable citizens in the hopes it will help tackle hunger, internal migration, and forest loss.
- The state is using the initiative to lean on potential migrants to remain in the country’s deep south, where five years of failed rains have left 2 million people hungry, instead of migrating north, where they are often blamed for social tensions and for destroying forests.
- This March, the Malagasy government started work on a Titre Vert enclave in the Menabe region, a popular destination for migrants from the drought-hit south, to dissuade them from clearing unique dry forests to grow crops.
- Critics say the government is holding people back in a rain-starved region without providing enough support; in Menabe, backers of the project hope to provide ample assistance to get migrants out of the forests and onto their feet.
Philippines’ largest freshwater wetland and Indigenous livelihoods face multiple threats
- The floating community of the Manobo Indigenous tribe depend on the rise and fall of water in the Philippines’ Agusan Marsh; however, the marsh faces challenges that threaten its ecosystem and the lives of the people who depend on it.
- Development projects, locals and others moving into the fertile region are burning and draining the peatlands and swamp forests for conversion into farmland.
- The continued expansion of agricultural areas in the Agusan Marsh, known as the Philippines’ least-disturbed freshwater wetland, has changed habitats in the basin and, with land use conversion, fragmented ecosystems.
- A recent study published in the journal Nature found extensive global wetland loss over the past three centuries due to various causes, including similar ones seen in the Agusan Marsh.
Vietnamese rice farmers go high-tech to anticipate a low-water future
- Since the 1970s, Vietnam’s “rice-first” policy facilitated the construction of an elaborate series of dikes and dams that allowed farmers in the Mekong Delta to flood their fields to allow for multiple harvests per year.
- Now, in the face of climate change impacts, seawater intrusion, upstream dams and new government policies that mandate water conservation, farmers in the delta need to find ways to reduce their water consumption.
- In one pilot project, university researchers have teamed up with local farmers to implement a technique called alternate wetting and drying (AWD), supported by a smartphone application that allows farmers to save water and reduce emissions.
‘What we need to protect and why’: 20-year Amazon research hints at fate of tropics
- In its bold outlines, many informed people understand that climate change is reducing tropical biodiversity and thereby degrading the functionality and ecoservices of tropical forests. But what are the specific mechanisms by which these forests are being diminished over long time frames?
- One project on the slopes of the Peruvian Amazon has tried to make exactly that type of assessment, via a 20-year ongoing research project that meticulously observes a narrow transect of rainforest stretching from the Amazon lowlands near sea level to the Andean highlands above 3,352 meters (11,000 feet).
- The international team conducting this work, the Andes Biodiversity and Ecosystem Research Group (ABERG), is painstakingly observing changes in more than 1,000 tree species, birds, frogs, snakes and more to determine not only how much climate change is affecting them, but untangling how the change process works.
- This type of in-depth research is vital to conserving tropical rainforest diversity, the carbon storage capacity it offers, and its assistance in maintaining long-persisting regional and global precipitation patterns vital to agriculture and other water needs. Mongabay contributor Justin Catanoso traveled to Peru to observe ABERG at work.
Drought cycles erode tropics’ ability to absorb CO₂, study finds
- A recent study finds that tropical carbon sinks have become increasingly vulnerable to water scarcity since 1960, and are consequently less able to absorb carbon dioxide.
- These findings suggest that tropical ecosystems are less resilient to climate change than previously thought.
- While the study doesn’t necessarily make projections for the future, the findings suggest that an acceleration of climate change, which is very likely to bring more drought, could further limit the ability of tropical ecosystems to absorb carbon dioxide, which, in turn, would worsen climate change.
With El Niño likely, Indonesia’s volunteer firefighters gear up — with new gear
- More than 11,000 community firefighters across Indonesia are readying for a likely El Niño year, better prepared than ever before.
- One community outfit of five volunteers in Sumatra’s province is monitoring the local peatland with the help of a drone procured from the village budget.
- Officials hope that a legal crackdown on farmers burning combined with improved community capacity can limit wildfires this year.
Antarctic warming alters atmosphere, ice shelves, ocean & animals
- The world’s latest record-high temperatures are increasingly putting Antarctica’s role in regulating global climate and ocean currents at risk. But so far, most signs indicate that the continent has not yet reached a point of no return. A rapid reduction in fossil fuel extraction and carbon emissions could still prevent the worst outcomes.
- Increased persistence of the Antarctic ozone hole over the past three years could be an indication of climate change, as it cools the south polar stratosphere, though high variability in this phenomenon and its complexity make causality difficult to prove.
- As global warming continues to melt Antarctica’s edges, a modeling study shows that fresh water going into the ocean could result in the next three decades in a more than 40% slowdown in the currents carrying heat and nutrients northward, essential to sustain ocean life as we know it. If ice shelves melt, allowing Antarctica’s ice sheets to flow to the sea, sea level rise will escalate.
- The latest discovery of a new colony of emperor penguins (Aptenodytes forsteri) in a marginal habitat of the Antarctic is good news, but also bad news, as it further highlights the vulnerability of the species as Antarctic ice masses destabilize — volatility that threatens their survival.
Protected areas store a year’s worth of CO₂ emissions, study reveals
- Researchers analyzed never-before-used satellite data to calculate how much carbon is stored in protected areas worldwide.
- The Amazon Rainforest’s protected areas accounted for the highest rate of carbon stock, according to the unprecedented study.
- The results can help policymakers and conservationists assess areas for protection to fight climate change — and not just forests.
Deforestation linked to less rainfall, study shows; El Niño could make it worse
- A new study shows concerning links between deforestation and reduced precipitation in tropical regions, which can in turn lead to reduced agricultural yields and food security issues.
- Now, researchers are concerned about the potential for another El Niño, which typically brings hotter, drier conditions to tropical regions, particularly in Southeast Asia, and can compound the effects of deforestation and reduced rainfall.
- The 2015-16 El Niño triggered crop losses, disease outbreaks, malnutrition and food insecurity, livestock deaths and other hardships that affected 60 million people globally; researchers say these trends signal the need for greater climate resilience in local communities.
Sweltering heat wave hits Sri Lanka; climate change will likely bring more
- As a heat wave sweeps across Asia, Sri Lanka continues to issue heat warnings to the public as the country experiences much higher than normal temperatures coupled with high humidity and threatening health impacts.
- Research has already shown that annually averaged mean minimum temperatures are increasing in most parts of Sri Lanka and climate projections indicate that Sri Lanka should brace for more intense and regular heat waves by 2030.
- Main cities record higher temperatures acting as urban heat islands and experts suggest that town planning should now include strategies to reduce heat as an adaptation for impending future heat stresses.
Climate change is no joke for Australians, says award-winning comedian Dan Ilic
- Despite citizens voting out the Scott Morrison-led government of Australia in 2022, Dan Ilic says there’s still a lot of talk around climate change policy with not enough action to meet national climate targets.
- Known widely for his epic billboards appearing in New York’s Times Square during the COP26 climate summit satirizing Australia’s lack of seriousness at the conference, Ilic is host of the award-winning Australian comedy/climate-focused podcast “A Rational Fear” and spoke with the Mongabay Newscast in Sydney about the landscape surrounding climate policy in the country today.
- He also shares his thoughts on victories for Indigenous communities in the Tiwi Islands and the Galilee Basin, both in Australia, where massive fossil fuel proposals were recently blocked.
Australia bushfires may have caused global climate phenomenon La Niña: Study
- The 2019-2020 Australian bushfires threw up so much ash into the atmosphere that it resulted in a cooling of the southern Pacific and hence a La Niña climate phenomenon, a new study says.
- Volcanic eruptions that send vast ash plumes into the atmosphere are thought to trigger La Niña events, but this is the first time a fire has been recorded as doing so.
- La Niña can produce ruinous weather conditions in contrasting ways, from additional hurricanes in North America and droughts in the Horn of Africa, to crop failures in South America.
- The study’s findings call into question the assumption in current climate models that biomass emissions — including from bushfires — will decrease over time.
A Philippine town and its leaders show how mangrove restoration can succeed
- In the early 1990s, the coastal town of Prieto Diaz, in the Philippines’ Bicol region, was selected as a pilot area for a community-based resource management program created by the Department of Environment and Natural Resources.
- Today, an award-winning community organization helps maintain a mangrove ecosystem that has grown to be the region’s largest and supports the livelihoods of both its members and the broader community.
- Residents credit the restored mangrove ecosystem with protecting the village from storm surges, and point to committed local leaders as vital to the ongoing success of mangrove restoration and protection.
‘Alarming’ heat wave threatens Bangladesh’s people and their food supply
- Temperatures across Bangladesh have hit record highs as the country swelters in the heat wave currently sweeping across much of Asia.
- Dhaka recorded its highest temperature in six decades this month, at 40.6°C (105.1°F), with meteorologists warning that heat waves like this are becoming more common.
- The heat also threatens the country’s all-important rice crop, with the government advising farmers to ensure sufficient irrigation to prevent heat shock to their plants.
- With the heat now easing, a new fear has emerged: Cooler temperatures signal the start of the monsoon, which, in the northeast region of Bangladesh often means floods that can also destroy rice crops.
After historic storm in New Zealand, Māori leaders call for disaster relief and rights
- After Cyclone Gabrielle hit New Zealand and mostly impacted Indigenous Māori homes, Māori delegates attending the United Nation’s conference on Indigenous peoples say the government has left them out of recovery services and funding.
- The delegates hope their presence at the United Nations forum will increase pressure on the New Zealand government to include Māori people in disaster recovery plans, provide more support for Indigenous-led climate initiatives, and fully implement the United Nations Declaration on the Rights of Indigenous Peoples.
- Māori knowledge, known as Mātauranga Māori, has been increasingly included in climate and conservation projects across the country as part of the ‘Vision Mātauranga’ framework, but it has also attracted fierce debate on its status within the scientific community.
Drying wetlands and drought threaten water supplies in Kenya’s Kiambu County
- Prolonged drought in Kenya has caused a water crisis, threatening local livelihoods and biodiversity; one of the badly affected areas is Kiambu County, a region normally known for its high agricultural productivity.
- Human activities such as dumping, encroachment and overgrazing coupled with dire effects of climate change exacerbate the degradation of wetlands, worsening the water crisis.
- Scientists say that conservation efforts must center around local communities to ensure the restoration of natural resources and combat the impacts of climate change.
A caribou hunter and researchers uncover the impact of climate change on Arctic hunting
- Indigenous communities in the Alaskan and Canadian Arctic have relied on the migratory Porcupine caribou herd for thousands of years, leading to a deep relationship and respect for the caribou.
- A study found that decreased snowfall, driven by climate change, could make it more difficult for Indigenous communities to travel on snow mobiles to hunt for caribou.
- The study was a collaboration between Indigenous and non-Indigenous researchers who analyzed a rare log of Indigenous knowledge, surveys that hunters completed annually.
Deforestation drives fire risk in Borneo amid a warming climate, study finds
- Annual peatland fires in Indonesia affect ecology, air quality, nutrient distribution of the soil, and human health.
- A modeling study finds that under current climate change projections and with rapid deforestation in Borneo, fire risk increases by the end of the century.
- The findings show that deforestation is a significant factor in fire risk.
- While local governments can’t control global climate change, they work to stem forest lost and invest in reforestation of tropical forests and revitalization of peatlands to mitigate fire risks in the future, researchers say.
Fish kills leave Kenya’s Lake Victoria farmers at a loss, seeking answers
- According to a Kenyan government report, fish farmers in sections of Lake Victoria lost more than 900 million Kenyan shillings ($7.2 million) in massive fish kills in November 2022.
- Scientists attribute the fish kills to reduced levels of dissolved oxygen likely due to a natural phenomenon called upwelling, which can be exacerbated by climate change and extreme weather.
- Local farmers who lost their fish, however, attribute the die-offs to pollution from Lake Victoria industries, which agencies have accused of discharging untreated effluent into the lake in recent years.
Southern atmospheric rivers drive irreversible melting of Arctic sea ice: Study
- Arctic sea ice extent has reached its winter maximum extent for 2023 at 14.62 million sq. km., the fifth lowest on record. Combined with this year’s unprecedentedly small Antarctic sea ice summer minimum extent, global sea ice coverage reached a record low in January.
- Arctic sea ice is not only receding, but also seriously thinning. New research has found that a huge melt in 2007 and associated ocean warming kicked off a “regime shift” to thinner, younger, more mobile and transient ice that may be “irreversible.”
- A big reason why Arctic sea ice is declining even in the frigid polar winter is that atmospheric rivers, which carry warmth and rainfall like the deluges seen in California recently, are surging up from the south and penetrating the Arctic more often.
Sea level rise looms, even for the best-prepared country on Earth
- The Netherlands, a low-lying European country with more than a quarter of its land below sea level, has been going to great lengths to protect itself from the impacts of climate change, including sea level rise and extreme weather events like heavy rain.
- But even for the Netherlands, a country with the wealth and experience to address these issues, the future remains uncertain, mainly because a range of possible scenarios could play out after 2050.
- According to the Intergovernmental Panel on Climate Change, a low-emissions scenario for the greenhouse gases that amplify global warming could elevate sea levels about half a meter (1.6 feet) above present levels by 2100; a higher-emissions scenario could lead to a 2-m (6.6-ft) rise by 2100 and a 5-m (16.4-ft) rise by 2150.
- Experts say that most other countries need to take the threat of sea level rise more seriously, and that engineering challenges, a lack of awareness and education, sociocultural concerns, and financial constraints are hampering their preparation.
Make it local: Deforestation link to less Amazon rainfall tips activism shift
- A new study supports mounting evidence that deforestation in the Amazon Rainforest correlates with a reduction in regional rainfall.
- Experts say this research reinforces the findings of other studies that claim the Amazon is leaning toward its “tipping point” and the southern regions are gradually becoming drier.
- Environmentalists see this research as an opportunity to reshape conservation activism and policy towards local communities.
Amazon deforestation linked to reduced Tibetan snows, Antarctic ice loss: Study
- Earth’s climate is controlled by a complex network of interactions between the atmosphere, oceans, lands, ice and biosphere. Many elements in this system are now being pushed toward tipping points, beyond which changes become self-sustaining, with the whole Earth system potentially shifting to a new steady state.
- A recent study analyzed 40 years of air temperature measurements at more than 65,000 locations to investigate how changes in one region rippled through the climate system to affect temperatures in other parts of the globe. Computer models then simulated how these links may be affected by future climate change.
- Researchers identified a strong correlation between high temperatures in the Amazon Rainforest and on the Tibetan Plateau. They found a similar relationship between temperatures in the Amazon and the West Antarctic Ice Sheet.
- Deforestation in the Amazon likely influences the Tibetan Plateau via a convoluted 20,000-kilometer (12,400-mile) pathway driven by atmospheric and oceanic circulation patterns. The study suggests that a healthy, functioning Amazon is crucial not only for the regional climate in Brazil, but for the whole Earth system.
Climate change is exacerbating human-wildlife conflict, but solutions await: Study
- A review of 49 studies reveals that a variety of weather-related phenomena that are likely to become increasingly common due to climate change may increase human-wildlife conflict.
- The most commonly reported conflict outcomes were injury or death in people (43% of studies) and wildlife (45% of studies), and loss of crops or livestock (45% of studies). Many documented cases are occurring in the tropics, with animals such as Baird’s tapir (Tapirus bairdii) in Mexico, and elephants in Africa and Asia, increasingly coming into conflict with local communities.
- The impacts of climate change on human-wildlife conflict may especially affect vulnerable human populations, particularly when combined with pressures that limit mobility and flexibility in humans and animals. These stressors should be minimized where possible, researchers suggest.
- A better understanding of the climatic drivers of human-wildlife conflict could help prevent or alleviate conflicts. Predicting the onset of extreme weather events such as droughts, and proactively responding with temporary measures to protect animals and people, could be one effective solution, as could sharing information on how to avoid the hazards of wildlife conflict.
Carbon uptake in tropical forests withers in drier future: Study
- A new study incorporating satellite data on organic material, or biomass, in tropical forests with experimental data about the effects of temperature and precipitation suggests that forests may lose substantial amounts of carbon by the end of the 21st century.
- Even with low continued carbon emissions, tropical forests, especially those in the southern Amazon, could lose between 6.8 and 12% of their aboveground carbon. With higher emissions, they could lose 13.3 to 20.1% of their carbon stores.
- The results highlight the need to reduce global temperatures rapidly to maintain the healthy forests best able to sequester carbon from the atmosphere.
- The team reported their findings Feb. 6 in the journal Nature Climate Change.
An El Niño is forecast for 2023. How much coral will bleach this time?
- Forecasts suggest that an El Niño climate pattern could begin later this year, raising sea temperatures at a time when global temperatures are already higher than ever due to human-driven climate change.
- If an El Niño develops and it becomes a moderate to severe event, it could raise global temperatures by more than 1.5°C (2.7°F) above pre-industrial levels, the threshold set by the Paris Agreement.
- An El Niño would generate many impacts on both terrestrial and marine ecosystems, including the potential for droughts, fires, increased precipitation, coral bleaching, invasions of predatory marine species like crown-of-thorns starfish, disruptions to marine food chains, and kelp forest die-offs.
Temperature extremes, plus ecological marginalization, raise species risk: Studies
- In a business-as-usual carbon emissions scenario — humanity’s current trajectory — two in five land vertebrates could be exposed to temperatures equal to, or exceeding, the hottest temperatures of the past decades across at least half of their range by 2099. If warming could be kept well below 2°C (3.6°F), that number drops to 6%, according to a new study.
- More than one in eight mammal species have already lost part of their former geographical range. In many cases, this means those species no longer have access to some (or sometimes any) of their core habitat, making it much more difficult to survive in a warming world.
- When animal populations continue to decline in an area even after it has been protected, one possible explanation may be that the conserved habitat is marginal compared to that found in the species’ historical range.
- In the light of recent pledges to protect 30% of the planet’s surface, it is important to prioritize the right areas. The focus should be on conserving core habitat — which is often highly productive and already intensively used by humans — while respecting the rights and needs of Indigenous people, many of whom have also been pushed to the margins.
For threatened seabirds of NE Atlantic, climate change piles on the pressure
- A new report shows that puffins and other seabird species in the Northeast Atlantic are at risk from climate change.
- It warns most seabird species would lose a substantial amount of their current breeding sites and available prey due to climate change, but each species has unique challenges.
- The authors describe potential interventions that conservation experts can enact to protect the species, including the relocation of seabird breeding sites, supplementary feeding, and providing resources that help seabirds deal with extreme weather events such as flooding and heat waves.
Humanitarian experts report ‘cascading crises’ as climate, health emergencies soar
- Globally, humanitarian aid workers are facing complex climate and health crises that require urgent adaptations within a shrinking humanitarian space, according to a recent piece in the Lancet.
- About 274 million people worldwide are now in need of humanitarian assistance — up from 235 million in 2021 — as climate emergencies intensify.
- In Kenya, families on the shores of Lake Victoria were displaced at the peak of the COVID-19 pandemic and humanitarian organizations played a key role in supporting villagers to cope with the dual shocks.
- Data from Children Service Department show that currently, at least 3,420 children and 12 households in the Lake Victoria area are headed by children living in makeshift camps.
Extreme heat takes a toll on tropical countries’ economies
- Extreme heat costs tropical countries more than 5% of their annual per capita GDP, new research shows, while more prosperous mid-latitude countries lose only about a 1% of GDP due to heat waves, which can even bolster economic growth in some instances.
- Poorer tropical countries suffer the worst effects of heat waves despite being least culpable and least economically capable of adapting.
- The effects of extreme heat and drought can hit hard in local communities, such as among Kenyan families who rely on cattle they can no longer feed.
Brazil’s Pantanal is at risk of collapse, scientists say
- Though the Pantanal is 93% privately owned, this vast Brazilian tropical wetland remains a stronghold for jaguars and untold other species, and connects animals with the Amazon, Cerrado and other biomes.
- A confluence of human activities in Brazil and worldwide — including deforestation and climate change — are heating and drying this watery landscape, threatening the entire ecosystem with drought, wildfires and habitat loss.
- Now, a plan to dredge and straighten the Paraguay River that feeds the Pantanal could serve as the death knell for this vast wetland ecosystem.
- There’s hope that president-elect Luiz Inácio Lula da Silva, who campaigned on an environmental platform, will initiate stewardship that stops Pantanal deforestation and the waterway project, helping curb greenhouse gas emissions.
Japan’s example: Can forest planting reduce climate disaster risk?
- In disaster-prone Japan, torrential rains exacerbated by the climate crisis have caused serious flooding and landslides in recent years, including in the country’s many forests.
- While acknowledging the limits of forests’ ability to prevent landslides occurring in the bedrock, Japan’s Forestry Agency is implementing both forest improvement activities and erosion control facility construction to help mitigate future landslide disasters.
- Japan’s monoculture plantation forests, which represent 40% of the nation’s total forest cover, are seen by some experts and civil society members as insufficient to prevent mountain disasters. However, other experts say that a much wider range of geological and environmental factors, not just tree species, determine a forest’s disaster mitigation ability.
- Along Japan’s Pacific coast, others are using trees planted on raised embankments as an as-yet-untested countermeasure against future tsunamis, a type of disaster experts say can also be exacerbated by sea level rise due to climate change.
In Brazil’s agricultural heartland, rivers run dry as monoculture advances
- The Paraná River Basin has suffered an unprecedented drought since 2021, affecting hydropower generation, river-borne food shipments, and freshwater supplies for 40 million people across Brazil, Argentina and Paraguay.
- In Brazil, the prolonged drought has hit some of the region’s most important reserves, including Várzeas do Rio Ivinhema State Park, which houses one of the last slices of forest in Mato Grosso do Sul state and acts as a refuge for hundreds of species.
- The drought has drained lagoons in the park, made parts of the reserve more prone to wildfires, and disrupted the breeding cycles of native birds.
- Environmentalists blame the advance of large-scale monoculture in the region, which has cleared most of the forests and ushered in changes in rain patterns and droughts.
Climate change is hammering insects — in the tropics and everywhere else: Scientists
- A new review paper finds that climate change is pounding insects in a wide variety of ways all over the world.
- Because insects are so sensitive to temperature change, climate change is impacting them directly, including potentially decreasing their ability to breed.
- But climate change is also causing insects to change their behavior as it shifts seasonal beginnings and ends, risking that insects will act out of sync with the rest of the environment on which they depend. Climate change-intensified drought, extreme precipitation, lengthening heat waves, and fires are also harming insects.
- The best way to protect insects? Combat climate change and safeguard micro-habitats.
Words that didn’t make the cut: What happened to Indigenous rights at COP27
- This year’s U.N. climate conference saw the highest participation of Indigenous peoples to date, with more than 300 delegates from around the world calling for agreements to explicitly include a human rights approach.
- Although Indigenous issues were ambitiously mainstreamed across agenda items at the start of the conference, countries began to compromise in the final days when there were a lot of topics still not concluded, say Indigenous negotiators.
- Agreements on the rules around carbon offset markets included limited language on recognizing the rights of Indigenous peoples and the need to consult communities on the use of land.
- Indigenous delegates warmly welcomed the creation of a loss and damage fund which they say will greatly help Indigenous communities already impacted by climate change.
With climate reparations finally on the table at COP27, what now?
- The question of who should pay damages for climate change-induced losses is finally on the table at the COP27 climate summit in Sharm el-Sheikh, Egypt.
- While mitigation and adaptation goals aim to curb carbon emissions and prepare for future impacts, loss and damage is concerned with harm already wrought by climatic disruptions or locked in by current emission levels — and with who should foot the bill.
- Emerging research on climate-related damages shows that the U.S. could face the biggest claims for reparations, even though drawing direct causal links between carbon emissions arising in one country and damaging climatic events in another country is complicated.
- “Is there a scientific basis for loss and damage and climate liability? The answer is yes,” says Justin Mankin, a climate scientist at Dartmouth College in the U.S. and co-author of a recent study on calculating climate damages.
Deadly landslides prompt Philippine president to call for tree planting
- Typhoon Nalgae, which made five landfalls on Oct. 29, killed 123 people across the Philippines, including at least 61 who died in floods and landslides on the southern island of Mindanao.
- After inspecting the damage wrought by the storm, President Ferdinand Marcos Jr. blamed deforestation and climate change for the scale of the disaster, and called on flood control plans to include tree planting.
- The Philippines already has an ambitious tree-planting program, but an audit found it has so far fallen short of its target.
COP27: Climate Loss & Damage talks now on agenda, but U.S. resistance feared
- Loss and Damage (L&D) climate finance will be on the agenda at COP for discussion for the first time ever by the world’s nations, as the result of intense pressure applied by developing countries and NGOs just before the start of COP27 in Egypt.
- L&D refers to reparations potentially owed to poorer, more vulnerable developing nations for the climate harm caused by wealthy nations and their large-scale historical carbon emissions.
- The complexities of the mechanism for calculating losses by developing nations, and paying out of damages by wealthy nations, has never been worked out. The U.S. and other wealthy nations have a history of obstructing L&D negotiations.
- The concern among developing nations at COP27 is that even though L&D is being discussed, wealthy countries will reject the idea of direct no-strings-attached payments from wealthy countries to poorer nations, opting instead for loans, insurance and other less direct financial mechanisms.
Humans are decimating wildlife, report warns ahead of U.N. biodiversity talks
- Wildlife populations tracked by scientists shrank by nearly 70%, on average, between 1970 and 2018, a recent assessment has found.
- The “Living Planet Report 2022” doesn’t monitor species loss but how much the size of 31,000 distinct populations have changed over time.
- The steepest declines occurred in Latin America and the Caribbean, where wildlife abundance declined by 94%, with freshwater fish, reptiles and amphibians being the worst affected.
- High-level talks under the U.N. Convention on Biological Diversity (CBD) will be held in Canada this December, with representatives from 196 members gathering to decide how to halt biodiversity loss by 2030.
Arctic sea ice loss to increase strong El Niño events linked to extreme weather: Study
- The frequency of strong El Niño events could increase by 35% by the end of the century as Arctic sea ice begins to melt out completely in the summer, according to a recent modeling study. El Niños — buildups of especially warm water in the eastern Pacific off of Peru — often trigger ‘devastating’ droughts, floods and cyclones around the globe.
- The findings provide more evidence that Arctic warming is affecting weather in other parts of the world — not only in the mid-latitudes, but as far away as the tropics.
- Other recent studies have found that sea ice loss is causing rapid acidification of the Arctic Ocean and more extreme precipitation and flooding in Svalbard, a Norwegian archipelago located between mainland Norway and the North Pole.
Haiti: An island nation whose environmental troubles only begin with water
- As Haiti plunges into the worst social unrest the nation has seen in years, shortages abound. One of these is water. But in Haiti, water scarcity has deeper roots, that connect to virtually every other aspect of the environment. Haiti’s ecosystems today, say some, are under stress due to regional and global transgressions of the nine planetary boundaries.
- The planetary boundary framework originated in 2009 to define required limits on human activities to prevent collapse of vital Earth operating systems. They include biodiversity loss, freshwater, air pollution, climate change, high phosphorus and nitrogen levels, ocean acidity, land use changes, ozone layer decay, and contamination by human-made chemicals.
- Scientists defining the global freshwater boundary warn that tampering with the water cycle can affect the other boundaries. Haiti, as a small isolated island nation, suggests a laboratory case-study of these many interconnections, and offers a graphic example of the grim results for humanity and wildlife when freshwater systems are deeply compromised.
- Haiti today is plagued by an extreme socioeconomic and environmental crisis. As it fights climate change, freshwater problems, deforestation and pollution, it may also be viewed as a bleak bellwether for other nations as our planetary crisis deepens. But scientists warn that research on applying planetary boundary criteria on a regional level remains limited.
2022: Another consequential year for the melting Arctic
- Arctic sea ice extent shrank to its summertime minimum this week — tied with 2017 and 2018 for the 10th lowest ever recorded. However, the last 16 consecutive years have seen the least ice extent since the satellite record began. Polar sea ice extent, thickness and volume all continue trending steeply downward.
- Arctic air temperatures were high this summer, with parts of the region seeing unprecedented heating. Greenland saw air temperatures up to 36° F. above normal in September. Canada’s Northwest Territories saw record highs, hitting the 90s in July. Sea temperatures also remained very high in many parts of the Arctic Ocean.
- Scientists continue to be concerned as climate change warms the far North nearly four times faster than the rest of the planet, sparking concern over how polar warming may be impacting the atmospheric jet stream, intensifying disastrous extreme weather events worldwide, including heat waves, droughts and storms.
- While a mostly ice-free Arctic could occur as early as 2040, scientists emphasize that it needn’t happen. If humanity chooses to act now to drastically reduce greenhouse gas emissions, downward sea ice extent and volume trends could potentially be reversed.
How close is the Amazon tipping point? Forest loss in the east changes the equation
- Scientists warn that the Amazon is approaching a tipping point beyond which it would begin to transition from a lush tropical forest into a dry, degraded savanna. This point may be reached when 25% of the forest is lost.
- In a newly released report, the Monitoring of the Andean Amazon Project (MAAP) estimates that 13.2% of the original Amazon forest biome has been lost due to deforestation and other causes.
- However, when the map is divided into thirds, it shows that 31% of the eastern Amazon has been lost. Moisture cycles through the forest from east to west, creating up to half of all rainfall across the Amazon. The 31% figure is critical, the report says, “because the tipping point will likely be triggered in the east.”
- Experts say the upcoming elections in Brazil could have dramatic consequences for the Amazon, and to avert the tipping point we must lower emissions, undertake ambitious reforestation projects, and build an economy based on the standing forest. Granting and honoring Indigenous land tenure and protected areas are also key strategies.
More droughts are coming, and the Amazon can’t keep up: Study
- Up to 50% of rainfall in the Amazon comes from the forest itself, as moisture is recycled from the trees to the atmosphere.
- In severe droughts, when the forest loses more water to evaporation than it receives from rain, the trees begin to die. For every three trees that die due to drought in the Amazon rainforest, a fourth tree, even if not directly affected by drought, will also die, according to a new study.
- As trees are lost and the forest dries up, parts of the Amazon will rapidly approach a tipping point, where they will transition into a degraded savanna-like ecosystem with few to no trees.
- The southern and southeastern Amazon are the most vulnerable regions to tipping. Here, deforestation and fires are at their most extreme, driven largely by cattle ranching and soy farming.
‘Mind-blowing’ marine heat waves put Mediterranean ecosystems at grave risk
- A recent study reveals the widespread effects of climate change-driven marine heat waves on the ecological communities of the Mediterranean Sea.
- Rises in sea surface temperatures as high as 5° Celsius (9° Fahrenheit) above normal have caused die-offs in 50 different taxonomic groups of animals from around the Mediterranean Basin.
- These far-reaching impacts of the warming sea could devastate the fisheries on which many of the Mediterranean region’s 400 million people rely.
- Researchers advocate bolstering and expanding marine protected areas. Although they can’t hold back the warmer waters that have proven deadly to the sea’s rich biodiversity, these sanctuaries can help ensure that these species don’t have to cope simultaneously with other pressures, such as overfishing or pollution.
For lightning-prone communities in Bangladesh, new warning system may not be enough
- An average of four people a week are killed by lightning in Bangladesh, and the problem is expected to get worse as climate change increases the frequency of lightning strikes.
- Most of the victims tend to be farmers and fishers, who, like members of other poor communities around the world, are bearing the brunt of climate change impacts.
- The Bangladesh Meteorological Department has rolled out an early-warning system, based on modeling developed in collaboration with NASA, that it says will provide up to 54 hours’ warning of potential lightning strikes.
- But experts say the communities most in need of these alerts are those who don’t have access to the technology, and have called for other measures, such as building lightning arresters in open fields and wetlands, to protect vulnerable communities.
Blazing start to Amazon’s ‘fire season’ as burning hits August record
- Fires in the Brazilian Amazon surged in August to the highest for the month since 2010, surpassing the blazes in August 2019 that drew global attention.
- On Aug. 22 alone, more than 3,300 fire alerts were reported in 24 hours, the worst single-day tally in the Amazon in 15 years.
- Researchers say it’s still too early to tell how severe this fire season will be, but what happened in August is an early warning.
Climate change hits northern Mexico, as officials look to solve water crisis
- Water scarcity in northern Mexico has gotten worse over the last several years, especially in the state of Nuevo León and its capital city of Monterrey.
- The crisis is a result of a combination of declining rainfall, increasing deforestation of natural aquifers and government mismanagement of climate change readiness policies.
- Officials are investing in new dams and aquifers to address the problem through 2050. They’ve also “bombed” the sky to make it rain and implemented temporary water cutoffs for residents in urban areas.
What’s the chance of meeting Paris climate goal? Just 0.1%, study says
- Under the 2015 Paris climate accord, nearly 200 countries committed to reducing the carbon emissions that fuel climate change and keeping global warming under 2˚C (3.6°F), or 1.5 ˚C (2.7°F) if possible.
- The 1.5°C goal requires global greenhouse emissions to be cut by 45% by 2030 and brought down to net zero by 2050, which is extremely unlikely to happen, a new analysis has found.
- Even if mean temperatures were held below 2°C, people living in the tropics, in particular in India and sub-Saharan Africa, will be exposed to extreme heat for most days of the year, researchers warned.
- In the mid-latitude zone, which includes the U.S. and most of the European Union and the U.K., deadly heat waves could strike every year by 2100.
As stronger storms hit Bangladesh farmers, banks are climate collateral damage
- Farmers in coastal areas of Bangladesh are increasingly defaulting on their loans due to climate change-driven storms that are destroying the farms they put up as collateral.
- Agricultural loans for the year to May 2022 amounted to the equivalent of $3 billion, or a fifth of the value of all loans distributed in Bangladesh.
- Increasingly frequent and severe storms therefore pose as much of a threat to the country’s financial sector as to farming communities and the environment.
- The warming of the sea in the Bay of Bengal as a result of climate change is supercharging storms, giving them more energy, helping them to drive tidal surges farther inland and dump larger volumes of rain than before.
Drought-beset South African city taps aquifer, shirks long-term solutions: Critics
- A major coastal city located in South Africa’s Eastern Cape province is facing a total water cutoff for about 500,000 residents, almost half its population, following a prolonged drought.
- Disaster relief hydrologists have begun drilling boreholes to access groundwater so that hospitals and schools can stay open during the emergency in Nelson Mandela Bay Metropolitan Municipality.
- But critics say the city administration has failed to develop a long-term plan to support water harvesting from intermittent rains and construction of desalination plants.
- They also point out that overreliance on boreholes drilled near the sea could lead to saline water intrusion into the aquifer, contaminating groundwater and rendering borehole water undrinkable.
‘Sherpas’ real stories are seldom written’: Q&A with authors Ankit Babu Adhikari & Pradeep Bashyal
- The Indigenous Sherpa communities living in Nepal’s Himalayas find themselves at the forefront of climate change, say the authors of a recent book about the legendary mountaineers.
- Mountaineering has brought a steady source of income for communities living in harsh conditions, but it has also brought with it unprecedented challenges.
- Climate change is making climbing mountains harder and affecting the raising of yaks, considered the lifeline of Sherpa communities.
- To mark the International Day of the World’s Indigenous Peoples, Mongabay spoke to the co-authors of the new book, Sherpa: Stories of Life and Death from the Forgotten Guardians of Everest, about the people who live, work, adapt and survive on the roof of the world.
Lack of timely rains, fertilizer hits rice farmers in Nepal’s granary
- The annual monsoon rains have failed to arrive in Nepal as anticipated ahead of the rice-planting season, leaving farmers facing another season of loss and the country bracing for a food shortage.
- A senior government meteorologist says it’s still too early to link the lateness of the monsoon to climate change, but what’s certain is that climate change is already wreaking havoc with rainfall patterns in Nepal.
- Last year, a prolonged monsoon brought unexpected flash floods that cost farmers $93 million in damages.
- A decline in rice production this year could put Nepal’s already strained finances under even more pressure by forcing the country to import rice.
Elevated homesteads give hope to flood-hit communities in Bangladesh
- Increasingly severe flooding in Bangladesh threatens the homes and livelihoods of some 10 million people who live on river islands known as chars.
- The rate of erosion of these chars has increased in recent years amid an intensified monsoon season that swells the volume of the Ganges, Brahmaputra and Meghna rivers where the low-lying chars are located.
- As an adaptation measure the government and NGOs are supporting char communities to raise the height of their homesteads to protect themselves during the monsoon.
Climate change amplifies the risk of conflict, study from Africa shows
- New research shows that climate change can amplify the risk of conflict by as much as four to five times in a 550-kilometer (340-mile) radius, with rising temperatures and extreme rainfall acting as triggers.
- Many countries most vulnerable to climate impacts are beset by armed conflicts, such as Somalia, which is grappling with widespread drought amid a decades-long civil war; the research suggests the country is trapped in a vicious cycle of worsening climatic disasters and conflict.
- Both too little rain and too much rain are triggers for conflict, the research finds: persistent rainfall failures increase instability over a broader geographic region while extreme rainfall increases the likelihood of confrontations over a smaller area and for a shorter time, the analysis suggests.
- The research underscores the importance of tackling climate change impacts and conflict mitigation together because misguided climate adaptation strategies can intensify existing tensions.
‘The volume of water is beyond control’: Q&A with flood expert M. Monirul Qader Mirza
- An early start to the monsoon and unusually heavy rains have caused massive flooding in northeastern Bangladesh, leaving millions of people stranded in floodwaters.
- The Meghna River Basin is accustomed to these flash floods, but the scale of the disaster this year has been compounded by human encroachment and development in the watershed region, said M. Monirul Qader Mirza, a water management expert.
- In an interview with Mongabay, Mirza emphasized the need for infrastructure planning to consider river and rainfall dynamics to mitigate flood risk, and to have an early-warning system in place to minimize damage.
- Mirza also said that identifying the role of climate change in the problem is complex and requires extensive studies and modeling, but added it’s indisputable that rainfall patterns have become increasingly erratic.
Beyond boundaries: Earth’s water cycle is being bent to breaking point
- The hydrological cycle is a fundamental natural process for keeping Earth’s operating system intact. Humanity and civilization are intimately dependent on the water cycle, but we have manipulated it vastly and destructively, to suit our needs.
- We don’t yet know the full global implications of human modifications to the water cycle. We do know such changes could lead to huge shifts in Earth systems, threatening life as it exists. Researchers are asking where and how they can measure change to determine if the water cycle is being pushed to the breaking point.
- Recent research has indicated that modifications to aspects of the water cycle are now causing Earth system destabilization at a scale that modern civilization might not have ever faced. That is already playing out in extreme weather events and long-term slow-onset climate alterations, with repercussions we don’t yet understand.
- There are no easy or simple solutions. To increase our chances of remaining in a “safe living space,” we need to reverse damage to the global hydrological cycle with large-scale interventions, including reductions in water use, and reversals of deforestation, land degradation, soil erosion, air pollution and climate change.
Bangladeshi coastal communities plant mangroves as a shield against cyclones
- Bangladesh’s southwestern coastal districts are prone to tidal surges, which can become extreme during cyclone seasons, with surges as high as 3 meters (10 feet).
- The coasts have embankments built across to keep the seeping seawater from reaching the coastal settlements, but as cyclones get more severe under a changing climate, these embankments aren’t enough, and losing houses to cyclonic floods has become the norm for coastal communities here.
- As a protection measure, the Bangladeshi government and several NGOs, with the communities’ participation, have initiated large-scale planting of mangrove trees along the embankments to act as a natural shield against tidal surges.
- The NGOs have provided the initial financial and technical support to the communities and are encouraging a self-reliant process of planting native mangrove species.
Geoengineering Earth’s climate future: Straight talk with Wake Smith
- A new book, “Pandora’s Toolbox: The Hopes and Hazards of Climate Intervention,” explores a number of ideas for pulling carbon out of the atmosphere or artificially cooling the planet, known collectively as geoengineering.
- The book argues that such dire actions may need to be taken by future generations to combat climate change, and if so, those generations deserve to inherit research done now to understand the potential impacts and feasibility of geoengineering.
- One tool whose implementation is likely inevitable, according to the book, is pulling carbon from smokestacks and the air and then sequestering it deep in the Earth, a technology currently happening at a very small scale. Another approach, far more controversial, would be to inject aerosols into the stratosphere to cool the Earth.
- None of these methods precludes the need to decarbonize now and fast. But given the dangerous trajectory of climate change, author Wake Smith argues that suffering future generations may decide to pull the geoengineering trigger.
2021 tropical forest loss figures put zero-deforestation goal by 2030 out of reach
- The world lost a Cuba-sized area of tropical forest in 2021, putting it far off track from meeting the no-deforestation goal by 2030 that governments and companies committed to at last year’s COP26 climate summit.
- Deforestation rates remained persistently high in Brazil and the Democratic Republic of Congo, home to the world’s two biggest expanses of tropical forest, negating the decline in deforestation seen in places like Indonesia and Gabon.
- The diverging trends in the different countries show that “it’s the domestic politics of forests that often really make a key difference,” says leading forest governance expert Frances Seymour.
- The boreal forests of Eurasia and North America also experienced a spike in deforestation last year, driven mainly by massive fires in Russia, which could set off a feedback loop of more heating and more burning.
Cradle of transformation: The Mediterranean and climate change
- The Mediterranean region is warming 20% faster than the world as a whole, raising concerns about the impacts that climate change and other environmental upheaval will have on ecosystems, agriculture and the region’s 542 million people.
- Heat waves, drought, extreme weather and sea-level rise are among the impacts that the region can expect to see continue through the end of the century, and failing to stop emissions of carbon dioxide and other greenhouse gases could make these issues worse.
- Charting a course that both mitigates climate change and bolsters adaption to its effects is further complicated by the Mediterranean’s mix of countries, cultures and socioeconomics, leading to wide gaps in vulnerability in the region.
Freshwater planetary boundary “considerably” transgressed: New research
- Earth’s operating systems have stayed in relative balance for thousands of years, allowing the flourishing of civilization. However, humanity’s actions have resulted in the transgressing of multiple planetary boundaries, resulting in destabilization of those vital operating systems.
- This week scientists announced that humanity has transgressed the freshwater planetary boundary. Other boundaries already crossed are climate change, biosphere integrity, biogeochemical cycles (nitrogen and phosphorous pollution), land-system change, and novel entities (pollution by synthetic substances).
- In the past, the freshwater boundary was defined only by “blue water” — a measure of humanity’s use of lakes, rivers and groundwater. But scientists have now extended that definition to include “green water” — rainfall, evaporation and soil moisture.
- Scientists say soil moisture conditions are changing from boreal forests to the tropics, with abnormally dry and wet soils now common, risking biome changes. The Amazon, for example, is becoming far dryer, which could result in it reaching a rainforest-to-savanna tipping point, releasing large amounts of stored carbon.
In landslide-prone Colombia, forests can serve as an inexpensive shield
- Scientists say that climate change and high deforestation rates will worsen the severity of landslides across Colombia.
- Regular landslides in the country already have a huge human and economic toll; a disaster in Dosquebradas municipality in February killed 14 people after a heavy rainstorm hit the coffee-growing region.
- Yet scientists say that targeted forest restoration and protection offers an inexpensive way to mitigate landslides, with one study in the Colombian Andes showing that it would be 16 times cheaper to invest in forests than to pay the high costs of repairing destroyed roads, power lines and pipelines after landslides.
- Scientists say that using forests to fight landslides would also have major biodiversity benefits in Earth’s second-most biodiverse nation.
Marine cold spells, a potential buffer against warming seas, are fading away
- A new study has found that marine cold spells have decreased in number and intensity since the 1980s due to climate change.
- Marine cold spells can have both negative and positive impacts on the environment; they can wreak havoc on ecosystems like coral reefs, but they can also buffer the impacts of heat stress during marine heat waves.
- While marine cold spells are decreasing, marine heat waves are increasing — but the relationship between these two kinds of events still isn’t clear, the study says.
Multiyear ice thinner than thought as Arctic sea ice reaches winter max: Studies
- Arctic sea ice has reached its yearly maximum extent at 14.88 million sq. km., the 10th lowest on record. The up-and-down story of sea ice extent in the past year highlights how unpredictable it can be from season to season, even as the overall decline continues.
- A study employing new satellite data found that Arctic multiyear sea ice — ice that survives the summer melt — is thinning even faster than previously thought and has lost a third of its volume in just two decades.
- This comes as Antarctic sea ice extent hit a record summer low, raising questions whether it is beginning a long-term decline, although experts are wary of drawing conclusions yet.
- While summer Arctic sea ice is predicted to mostly disappear by 2050, a new study suggests we could likely preserve it through 2100 by aggressively cutting methane emissions by 2030, along with reaching net-zero CO2 emissions by 2050.
In destroying the Amazon, big agribusiness is torching its own viability
- A new study has found that the transition zone between the Amazon and Cerrado in the northeast of Brazil has heated up significantly and become drier in the past two decades.
- The research points to deforestation in the Amazon and global climate changes as factors prolonging the dry season and warming up the region, leaving it susceptible to severe droughts and forest fires.
- Ironically, the changes being driven by the intensified agricultural activity are rendering the region less suitable for crop cultivation.
- The authors of the new study say there needs to be a balance of sustainable agricultural solutions and an environmentally focused political agenda to protect the region’s ecosystems, its economy, and its people.
Aerosol pollution: Destabilizing Earth’s climate and a threat to health
- Aerosols are fine particulates that float in the atmosphere. Many are natural, but those haven’t increased or decreased much over the centuries. But human-caused aerosols — emitted from smokestacks, car exhausts, wildfires, and even clothes dryers — have increased rapidly, largely in step with greenhouse gases responsible for climate change.
- Aerosol pollution kills 4.2 million people annually, 200,000 in the U.S. alone. So curbing them rapidly makes sense. However, there’s a problem with that: The aerosols humanity sends into the atmosphere presently help cool the climate. So they protect us from some of the warming that is being produced by continually emitted greenhouse gases.
- But scientists still don’t know how big this cooling effect is, or whether rapidly reducing aerosols would lead to a disastrous increase in warming. That uncertainty is caused by aerosol complexity. Atmospheric particulates vary in size, shape and color, in their interactions with other particles, and most importantly, in their impacts.
- Scientists say that accurately modeling the intensity of aerosol effects on climate change is vital to humanity’s future. But aerosols are very difficult to model, and so are likely the least understood of the nine planetary boundaries whose destabilization could threaten Earth’s operating systems.
‘Everything is on fire’: Flames rip through Iberá National Park in Argentina
- Fires in the central Corrientes province of northeast Argentina have burned through nearly 60% of Iberá National Park, home to protected marshlands, grasslands and forests that hosts an array of species.
- Many of the fires originated from nearby cattle ranches, and spread across significant portions of the park due to a prolonged drought.
- Conservationists are working to relocate a number of reintroduced species, including giant river otters and macaws, to places of safety.
- While experts say they expect a substantial loss to biodiversity, they add that the park should mount a rapid recovery thanks to all the rewilding work already done.
In trio of storms hitting Western Europe, role of climate change is complicated
- In early February, a polar vortex caused a series of three storms — Dudley, Eunice and Franklin — to hit the U.K. and Western Europe, unleashing heavy rains and winds across the region.
- The most powerful storm was Eunice, which had wind measurements of up to 196 kilometers per hour (122 miles per hour).
- Storms striking in quick succession are not unusual for Western Europe.
- While climate change did not necessarily drive these winter storms, it likely made the rainfall and storm surge more intense.
‘They’re going to get worse and worse’: Marine heat wave persists off Sydney
- In November 2021, an unusual marine heat wave materialized off the coast of Sydney; sea surface temperatures in the area have yet to go down.
- This marine heat wave is just one of numerous events occurring across the global oceans as human-induced climate change heats up the oceans.
- While marine heat waves can be triggered by a range of atmospheric, oceanic and climatic drivers, climate change plays a key role in driving these events.
Amazon losing far more carbon from forest degradation than deforestation: Study
- Forest degradation — due to human and environmental causes — was responsible for more carbon loss than deforestation between 2010 and 2019, researchers reported at the most recent American Geophysical Union meeting in December.
- Scientists found that the Brazilian Amazon saw more deforestation in 2019 than in 2015, but lost three times more carbon storage in 2015 than in 2019. The likely source of that additional carbon in 2015: forest degradation and biomass loss, possibly brought on by intense El Niño-related drought and storms during that year.
- More research is needed to determine precisely how much forest degradation is caused by human activities, including illegal logging and fragmentation, and set fires to make way for grazing and croplands, but also environmental factors, such as drought which has been significantly intensified by human-caused climate change.
- The large amount of carbon now being lost from degraded forests in the Brazilian Amazon should, researchers say, result in an evaluation of current conservation policies which almost exclusively focus on preventing deforestation rather than on curbing degradation.
Two storms in two weeks carve trail of death and destruction in Madagascar
- Batsirai, a category 4 cyclone, struck Madagascar’s eastern coast on Feb. 5, leaving 10 people dead.
- The island nation is still recovering from another tropical storm, Ana, which made landfall on Jan. 22 and left dozens dead and hundreds of thousands homeless.
- Data from the U.S. National Oceanic and Atmospheric Administration show that 12 storms of category 4 or 5, the highest level, made landfall on Madagascar between 1911; of these 12, eight occurred since 2000.
‘There’s not much hope’: Mediterranean corals collapse under relentless heat
- In 2003, a marine heat wave devastated coral reef communities in the Mediterranean Sea, including the reefs in the Scandola Marine Reserve, a protected region off the coast of Corsica.
- More than 15 years later, the coral reef communities in Scandola still have not recovered.
- Researchers determined that persistent marine heat waves, which are now happening every year in the Mediterranean, are preventing Scandola’s slow-growing coral reefs from recuperating.
- Human-induced climate change is the culprit; persistent rising temperatures in the ocean have normalized marine heat waves, not only in the Mediterranean, but in the global oceans.
Typhoon exposes biodiversity haven Palawan’s vulnerability — and resilience
- On Dec. 17, 2021, Typhoon Rai hit the Philippines’ Palawan Island, causing severe damage to protected areas including Puerto Princesa Subterranean River National Park (PPSRNP), Cleoptra’s Needle Critical Habitat, Malampaya Sound Protected Landscape and Seascape, and El Nido-Taytay Managed Resource Protected Area.
- The full impact of the storm has not yet been assessed; at PPSRNP, where preliminary surveys have been conducted, more than 2,200 trees were damaged on the park’s fringes and sightings of birds were down by 90%.
- Experts say the storm-damaged forests can recover — if they aren’t disturbed by human incursions, fires, or additional storms.
In Africa, temperatures rise, but adaptation lags on West’s funding failure
- Last year was the third-warmest year for the continent, tied with 2019, with warming more pronounced here than the global average.
- The annual temperature in 2021 was 1.33°C (2.39°F) above average for the continent, with West and North Africa seeing an unusually warm year.
- Extreme events and long-drawn catastrophes are taking a toll and sapping resilience, while adaptation efforts are failing due to planning gaps and financing woes.
- Committed finance for adaptation is pegged at $2.7 billion to $5.3 billion annually, but the estimated cost of coping with climate impacts is almost double that.
Coastal deforestation fuels more frequent storms in West Africa, study warns
- Storms are hitting the densely populated coastal pocket of West Africa twice as frequently as 30 years ago, a new study says.
- Declining forest cover is fueling this increased storm frequency in the coastal regions of southern West Africa.
- With the loss of forests, the daytime temperature difference between land and sea is widening, generating stronger winds and feeding convective storms.
- “The coastal location of deforestation in SWA [southern West Africa] is typical of many tropical deforestation hotspots, and the processes highlighted here are likely to be of wider global relevance,” the study authors write.
Mali’s centuries-old pastoralist traditions wilt as the climate changes
- As the world rediscovers the ingenuity of nature-based solutions, a detailed FAO report published this year highlights the traditions of nomadic pastoralists in Mali who have sustained an eco-friendly lifestyle over centuries.
- The Kel Tamasheq people, living amid the Saharan sands near Timbuktu, eat primarily local produce, generate little waste, and boast a negligible carbon footprint.
- The community’s world revolves around a transhumance tradition that follows seasonal movement; during the dry season, which lasts for more than six months of the year, the pastoralists migrate south with their livestock in search of grazing land and water.
- Climate change and increasing desertification have heavily impacted the food system of the Kel Tamasheq, especially the withering of Lake Faguibine, intensifying the community’s dependence on markets.
Sinkholes emerge in rural Kenya after series of floods, droughts
- In recent years, a number of sinkholes have emerged in Baringo county, a geologically active region in western Kenya’s Great Rift Valley.
- According to geologists, their appearance can be linked both to the worsening impacts of climate change through floods and droughts, and local communities drilling boreholes along precarious fault lines to access more water.
- According to members of the community, the sinkholes have yet to spur the county or the government into action, with food aid currently provided by local human rights organizations.
- Increases in floods are driving human-wildlife conflict for space, and pastoralists are having difficulty adapting to environmental changes.
As climate-driven drought slams farms in U.S. West, water solutions loom
- Drought in the U.S. West has been deepening for two decades, with no end in sight. Unfortunately for farmers, water use policies established in the early 20th century (a time of more plentiful rainfall), have left regulators struggling with their hands tied as they confront climate change challenges — especially intensifying drought.
- However, there is hope, as officials, communities and farmers strive to find innovative ways to save and more fairly share water. In Kansas and California, for example, new legislation has been passed to stave off dangerous groundwater declines threatening these states’ vital agricultural economies.
- Experts say that while an overhaul of the water allocation system in the West is needed, along with a coherent national water policy, extreme measures could be disruptive. But there are opportunities to realize incremental solutions now. Key among them is bridging a gap between federal water programs and farmers.
- A major concern is the trend toward single crop industrial agribusiness in semi-arid regions and the growing of water-intensive crops for export, such as corn and rice, which severely depletes groundwater. Ultimately, 20th century U.S. farm policies will need to yield to flexible 21st century policies that deal with unfolding climate change.
‘Tis the season’ for cold-stunned sea turtles — and their rescue — on Cape Cod
- As cold weather sets in across New England each year, juvenile sea turtles, drawn to the globally warmed summer waters off Cape Cod, Massachusetts, are cold-stunned. If not rescued they die.
- Trained volunteers have already brought more than 100 turtles to the New England Aquarium Sea Turtle Rescue Center this autumn. The number of cold-stunned turtles at Cape Cod has been rising during the last decade, with some seasons logging more than 1,000 stranded turtles — many of them critically endangered Kemp’s ridleys.
- Globally, most cold-stunning events occur on the U.S. Atlantic and Gulf coasts: especially in Massachusetts, North Carolina, Florida and Texas. Last year, more than 10,000 turtles were stranded in Texas alone. Cold-stun events have also been reported in Uruguay, Spain, Canada, Ireland, Denmark, France, and the UAE.
- On Cape Cod, the animals are stabilized at the New England Aquarium’s Sea Turtle Center, then transported to longer term care facilities across the U.S., often flown there by volunteer pilots working with Turtles Fly Too. As extreme weather events and ocean warming increase due to climate change, experts predict cold-stunning events will increase too.
In a warming world, deforestation turns the heat deadly, Borneo study finds
- New research identifies how rising localized temperatures driven by deforestation and global warming are increasing heat-related deaths and creating unsafe working conditions in Indonesia.
- In the Bornean district of Berau, 4,375 square kilometers (1,689 square miles) of forest were cleared between 2002 and 2018, contributing to a 0.95°C (1.71°F) increase in mean daily temperature across the district, according to the study.
- It concluded climate change temperature increases in the region caused an 8% rise in mortality rates in 2018, or more than 100 deaths annually, and an additional almost 20 minutes per day of unsafe work time.
- Based on the 2018 data, a projected 2°C (3.6°F) global temperature increase in deforested areas could result in a 20%increase in all-cause mortality — an additional 236-282 deaths per year — and almost five unsafe work hours per day.
With La Niña conditions back, is it good news for tropical forests?
- La Niña conditions have developed across the Pacific Ocean for the second year in a row, according to forecasters at NOAA’s Climate Prediction Center.
- A phase of the El Niño Southern Oscillation ocean-atmosphere cycle, La Niña heralds broadly cooler and wetter conditions across the tropics, with above-average rainfall predicted for important tropical rainforests in Southeast Asia and South America.
- Although the current conditions emerge toward the end of the fire season in the Amazon and Indonesia, experts say these biomes will benefit from wet conditions conducive to forest and peatland growth and recovery.
- Studies indicate that climate change will increase the frequency and severity of La Niña and El Niño events, which will occur against the backdrop of a warmer world, with inevitable implications for natural ecosystems and livelihoods.
2°C warming limit? More like 3°C and hotter, leading climate scientists say
- About two-thirds of climate scientists surveyed said they don’t think the Paris Agreement’s target of limiting global warming to 2°C (3.6°F) above pre-industrial levels by 2100 is achievable.
- Of the 92 scientists surveyed by the journal Nature, a majority said we are facing at least 3°C (5.4°F) of temperature rise by the end of this century.
- The survey did not consider scientific results but asked for the opinions of the researchers who serve as experts with the IPCC, the U.N.’s top body on climate science.
- The U.N. climate negotiations underway in Glasgow, Scotland, have nonetheless given some reason for cheer, with the return of the U.S., one of the biggest emitters, and more than 100 leaders vowing to rein in deforestation, a significant source of carbon emissions.
From flood to drought, Brazil’s Acre state swings between weather extremes
- Extreme weather conditions, from massive flooding to severe water shortages, have rocked cities and small communities alike in the heart of the Brazilian Amazon this year, a trend experts attribute to climate change and human actions.
- The Acre River, which crosses the state of same name in the western Brazilian Amazon, is experiencing its second-worst drought in recorded history, with water levels close to record lows.
- The water shortage comes just months after the same region experienced widespread flooding as the Acre River overflowed its banks and forced hundreds of thousands of people to flee their homes.
- Brazil as a whole is facing its worst dry spell in nearly a century, which is affecting water supplies for people, agriculture and electricity generation, and is part of a global pattern of increased water stress.
What makes a ‘refugee’? It could be a life-or-death question in the climate crisis
- A new analysis by the Environmental Justice Foundation says that international laws covering refugee protection are too narrow for the climate crisis.
- The group is calling for a new global agreement to protect those who are forced to flee the effects of climate change.
- A U.S. National Intelligence Estimate released on Oct. 21 said the world is currently on a trajectory for 2°C (3.6°F) of warming by 2050, underscoring the urgency of planning for climate-related migration.
Inland mangroves reveal a tumultuous climatic past — and hint at our future
- A new study concludes that the presence of inland mangroves along a river in southern Mexico was the result of climate change-driven sea level rise during the Pleistocene Epoch, some 115,000 to 130,000 years ago.
- The researchers’ analysis of the genetic history of the mangrove trees suggests that they are closely related to trees found on the coastline, and sediments nearby are similar to those found in ocean environments.
- Publishing their work Oct. 12 in Proceedings of the National Academy of Sciences, the team notes that their research highlights the impacts of global climate change.
Women on storm-hit Philippine island lead Indigenous effort to restore mangroves
- Residents of low-lying coastal areas in archipelagic countries like the Philippines are particularly vulnerable to the impacts of climate change, including the increase of powerful storms like 2013’s Typhoon Haiyan.
- Mangrove forests can buffer the impact of storm surges and high winds, but many of the Philippines’ mangrove ecosystems are severely degraded and efforts to restore them often fail.
- Busuanga Island, in the western province of Palawan, has a particularly effective mangrove restoration program, one that is spearheaded by Indigenous women who play a key role in planting, monitoring and protecting the forests.
Extreme heat exposure in cities tripled in less than 35 years, study finds
- Exposure to dangerously high temperatures in cities nearly tripled between 1983 and 2016, according to a study that considered both warming and population growth.
- Cities are hotter than their surrounding areas because they are densely populated and tend to generate and trap more heat.
- The decade starting 2011 was the warmest in recorded history, and the proportion of the global population exposed to extreme heat is expected to multiply in the coming decades.
- Excessive warming of urbanized areas and the relentless influx of people points to an urgent need for policies that protect city residents, especially in developing countries.
Children born in 2020 will see spike in climate disasters, study says
- The study used climate modeling to determine specialized impacts by region, finding that at the current level of carbon reduction pledges, people born in 2020 will experience many more extreme climate events in comparison to those born in 1960.
- On the world’s current course, those children will experience twice as many wildfires overall, three times as many crop failures, and seven times as many heat waves.
- At a geographical scale, children born in low-income countries that are least responsible for the climate crisis will confront significantly higher spikes in extreme events than in wealthier countries.
- If the world takes a more aggressive approach to limiting warming to 1.5°C (2.7°F) by 2100, the number of climate disasters experienced by younger generations would drop substantially, with the model predicting 45% fewer heat waves, 39% fewer droughts, and 28% fewer crop failures.
Fires bear down on Brazil park that’s home to jaguars, maned wolves
- Thousands of fires caused by humans in Brazil’s Cerrado savanna region continue to spread, with several fires around and inside Chapada dos Veadeiros National Park, a UNESCO World Heritage Site.
- The park is home to dozens of rare and threatened species as well as the source of many important rivers and waterways; experts warn the intensity of the fires could permanently damage the natural vegetation.
- The fires don’t come as a surprise to many scientists who had predicted earlier this year that ongoing drought, rising rates of deforestation, and lack of enforcement would build up to a severe fire season.
- Every single month this year has seen above-average levels of fire in the Cerrado, with more than 36% of all fires in Brazil this year concentrated in this biome, even though it only covers just over 20% of Brazil’s land mass.
Nitrogen: The environmental crisis you haven’t heard of yet
- The creation of synthetic fertilizers in the early 20th century was a turning point in human history, enabling an increase in crop yields and causing a population boom.
- But the overuse of nitrogen and phosphorus from those fertilizers is causing an environmental crisis, as algae blooms and oceanic “dead zones” grow in scale and frequency.
- Of the nine “planetary boundaries” that scientists say we must not cross in order to sustain human life, the boundary associated with nitrogen and phosphorus waste has been far surpassed, putting Earth’s operating system at risk.
- Global policymakers are beginning to slowly recognize the scale of the problem, as climate change threatens to make it worse. Absent major reforms to agribusiness practices, scientists are aiming to convince the world to reduce waste.
Researchers express alarm as Arctic multiyear sea ice hits record low
- Low sea ice concentration can create a misleading picture of sea ice health in the Arctic. Though extent is only at its 10th lowest since satellite records began in 1979, the waters north of Alaska this September are full of diffuse ice.
- Of great concern to scientists, the Arctic has lost 95% of its thick multiyear sea ice since 1985. Older, thicker ice acts as a buffer against future Blue Ocean Events, expected as early as 2035. A BOE would mark a year when most Arctic ice melts out in summer.
- It no longer takes a freak-weather year to reach near record-lows for extent or volume. 2020 saw a second-place finish in the record book, behind 2012.
The Pantanal is burning again. Will it be another devastating year?
- Fires have reignited in the Pantanal region of South America, the world’s largest tropical wetland, a year after it lost 30% of its biome to the catastrophic fires of 2020.
- With more than 700,000 hectares (1.7 million acres) of the Pantanal already burned, some experts say this year’s fires could be nearly as devastating as last year’s if the situation is not carefully managed and the current fires are not contained.
- Others are not as concerned, noting that fire is part of the natural ecological process in the Pantanal, and that this year’s fires aren’t nearly as damaging or substantial as last year’s.
- One marked difference between 2020 and 2021 is this year’s increased efforts to fight the fires, with government agencies, NGOs and communities working together to protect the Pantanal.
As populations grow, how will thirsty cities survive their drier futures?
- The world’s rapidly expanding cities are on a collision course with climate change, presenting unprecedented challenges to municipal and national governments as they work to continue providing residents with access to safe and sufficient water.
- Increasingly, calls are made to rethink the way we develop urban watersheds and the way we live in them — with water sourcing, transport, use and reuse planning key to the process. One approach, water-sensitive urban design (WSUD) entails a complete reimagining of the role and use of water in urban areas.
- WSUD embraces the water cycle, and considers the entire watershed where cities are located. It uses green infrastructure such as permeable pavements, green roofs and rain gardens, to greatly reduce stormwater runoff. Conscious design allows water to be recycled and reused repeatedly for various purposes. Waste is greatly reduced.
- Some cities are already changing their development pathways to be more resilient to inevitable future climate extremes, with Singapore and Cape Town leading the way. Future water stress can be overcome, but work needs to start now before extreme weather events, including mega droughts and floods, hit.
2015-2016 El Niño caused 2.5 billion trees to die in just 1% of the Amazon
- New research shows how a combination of high temperatures, intense drought, and human-caused fires resulted in dramatic forest loss in the Lower Tapajós Basin in the Brazilian Amazon.
- According to the authors, forest reduction meant that one of the world’s largest carbon sinks generated almost 500 million tons of CO2 emissions, an amount higher than the annual emissions of developed countries such as the U.K. and Australia.
- Due to climate change, more frequent extreme droughts are predicted to affect most of the Amazon basin in this century; in this scenario, the 2015 El Niño could be seen as a window into the future.
Reforestation holds promise for Europe’s increasingly drier summers
- A new study in Nature Geoscience suggests that if all land suitable for reforestation was forested in Europe, average summer rainfall would increase by 7.6%, partially ameliorating drier summers predicted as a result of climate change.
- While the study is based on all the potentially reforestable land in Europe after accounting for food security and biodiversity, the amount of land people are willing and able to reforest is likely to be lower in practice.
- As a statistical model, the study helps scientists and policymakers understand the relationship between forests and precipitation and highlight the benefits beyond carbon sequestration.
Humans’ role in climate warming ‘unequivocal,’ IPCC report shows
- The greenhouse gases humans have released into the atmosphere over the past 100 to 150 years has led to a 1.1°C (2°F) rise in global temperatures, according to the Intergovernmental Panel on Climate Change, or IPCC.
- The authors of the IPCC’s latest report use the strongest language yet to connect human activity to climate change, calling the link “unequivocal.”
- The report draws on the findings of thousands of studies, pointing to the need to cut CO2 emissions immediately while also suggesting that many of the impacts of climate change are irreversible.
- This report focuses on the science behind climate change and will be combined with two subsequent reports on the adaptation and vulnerability to the impacts of climate change and ways to mitigate its effects to produce the IPCC’s sixth assessment, scheduled for publication in September 2022.
A world of hurt: 2021 climate disasters raise alarm over food security
- Human-driven climate change is fueling weather extremes — from record drought to massive floods — that are hammering key agricultural regions around the world.
- From the grain heartland of Argentina to the tomato belt of California to the pork hub of China, extreme weather events have driven down output and driven up global commodity prices.
- Shortages of water and food have, in turn, prompted political and social strife in 2021, including food protests in Iran and hunger in Madagascar, and threaten to bring escalating misery, civil unrest and war in coming years.
- Experts warn the problem will only intensify, even in regions currently unaffected by, or thriving from the high prices caused by scarcity. Global transformational change is urgently needed in agricultural production and consumption patterns, say experts.
Cerrado desertification: Savanna could collapse within 30 years, says study
- Deforestation is amplifying climate change effects in the Brazilian Cerrado savanna biome, making it much hotter and drier. Researchers observed monthly increases of 2.24°C (4.03°F) in average maximum temperatures between 1961 and 2019. If this trend persists, temperature could be 6°C (10.8°F) higher in 2050 than in 1961.
- Cerrado air moisture is decreasing partly due to the removal of trees, which bring water up from as much as 15 meters (nearly 50 feet) underground to carry on photosynthesis during the dry season. Replacement of native vegetation by crops also reduces the absorption of sunlight by wild plants and leads to an increase in temperature.
- Even dew, the only source of water for smaller plants and many insects during the dry season, is being reduced due to deforestation and deepening drought. The demise of pollinators that rely on dew may prompt a cascading effect adversely impacting the biome’s biodiversity, which could collapse in the next 30 years.
- The Cerrado is often called Brazil’s “water tank,” as it is the source of eight of 12 Brazilian river basins. Its looming biome collapse and deepening drought mean less water for rural and urban populations and for agriculture. Low flows in rivers will also affect hydropower, likely causing energy shortages.
Eight of the 10 nations most at risk from climate and toxic pollution in Africa: study
- Of 176 nations considered, the top 10 found to be most vulnerable to both climate change impacts and environmental pollution are in Africa and South Asia, with the Democratic Republic of Congo being the worst off, according to a new study.
- Toxic pollution in the environment, be it dirty air, contaminated water or unhealthy soils, and climatic shifts resulting in warmer temperatures, extreme weather or land degradation, can all endanger human health.
- The study shows that tackling both kinds of risk together might be a good strategy for some countries like Singapore, Rwanda, China and India.
- It also highlighted the unequal toll of environmental destruction among nations: the 60 most vulnerable countries are home to two-thirds of the planet’s population.
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