We handpick and explain the most important stories at the intersection of climate, land, food and nature over the past fortnight.
This is an online version of Carbon Brief’s fortnightly Cropped email newsletter.
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Key developments
Food inflation on the rise
DELUGE STRIKES FOOD: Extreme rainfall and flooding across the Mediterranean and north Africa has “battered the winter growing regions that feed Europe…threatening food price rises”, reported the Financial Times. Western France has “endured more than 36 days of continuous rain”, while farmers’ associations in Spain’s Andalusia estimate that “20% of all production has been lost”, it added. Policy expert David Barmes told the paper that the “latest storms were part of a wider pattern of climate shocks feeding into food price inflation”.
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NO BEEF: The UK’s beef farmers, meanwhile, “face a double blow” from climate change as “relentless rain forces them to keep cows indoors”, while last summer’s drought hit hay supplies, said another Financial Times article. At the same time, indoor growers in south England described a 60% increase in electricity standing charges as a “ticking timebomb” that could “force them to raise their prices or stop production, which will further fuel food price inflation”, wrote the Guardian.
‘TINDERBOX’ AND TARIFFS: A study, covered by the Guardian, warned that major extreme weather and other “shocks” could “spark social unrest and even food riots in the UK”. Experts cited “chronic” vulnerabilities, including climate change, low incomes, poor farming policy and “fragile” supply chains that have made the UK’s food system a “tinderbox”. A New York Times explainer noted that while trade could once guard against food supply shocks, barriers such as tariffs and export controls – which are being “increasingly” used by politicians – “can shut off that safety valve”.
El Niño looms
NEW ENSO INDEX: Researchers have developed a new index for calculating El Niño, the large-scale climate pattern that influences global weather and causes “billions in damages by bringing floods to some regions and drought to others”, reported CNN. It added that climate change is making it more difficult for scientists to observe El Niño patterns by warming up the entire ocean. The outlet said that with the new metric, “scientists can now see it earlier and our long-range weather forecasts will be improved for it.”
WARMING WARNING: Meanwhile, the US Climate Prediction Center announced that there is a 60% chance of the current La Niña conditions shifting towards a neutral state over the next few months, with an El Niño likely to follow in late spring, according to Reuters. The Vibes, a Malaysian news outlet, quoted a climate scientist saying: “If the El Niño does materialise, it could possibly push 2026 or 2027 as the warmest year on record, replacing 2024.”
CROP IMPACTS: Reuters noted that neutral conditions lead to “more stable weather and potentially better crop yields”. However, the newswire added, an El Niño state would mean “worsening drought conditions and issues for the next growing season” to Australia. El Niño also “typically brings a poor south-west monsoon to India, including droughts”, reported the Hindu’s Business Line. A 2024 guest post for Carbon Brief explained that El Niño is linked to crop failure in south-eastern Africa and south-east Asia.
News and views
- DAM-AG-ES: Several South Korean farmers filed a lawsuit against the country’s state-owned utility company, “seek[ing] financial compensation for climate-related agricultural damages”, reported United Press International. Meanwhile, a national climate change assessment for the Philippines found that the country “lost up to $219bn in agricultural damages from typhoons, floods and droughts” over 2000-10, according to Eco-Business.
- SCORCHED GRASS: South Africa’s Western Cape province is experiencing “one of the worst droughts in living memory”, which is “scorching grass and killing livestock”, said Reuters. The newswire wrote: “In 2015, a drought almost dried up the taps in the city; farmers say this one has been even more brutal than a decade ago.”
- NOUVELLE VEG: New guidelines published under France’s national food, nutrition and climate strategy “urged” citizens to “limit” their meat consumption, reported Euronews. The delayed strategy comes a month after the US government “upended decades of recommendations by touting consumption of red meat and full-fat dairy”, it noted.
- COURTING DISASTER: India’s top green court accepted the findings of a committee that “found no flaws” in greenlighting the Great Nicobar project that “will lead to the felling of a million trees” and translocating corals, reported Mongabay. The court found “no good ground to interfere”, despite “threats to a globally unique biodiversity hotspot” and Indigenous tribes at risk of displacement by the project, wrote Frontline.
- FISH FALLING: A new study found that fish biomass is “falling by 7.2% from as little as 0.1C of warming per decade”, noted the Guardian. While experts also pointed to the role of overfishing in marine life loss, marine ecologist and study lead author Dr Shahar Chaikin told the outlet: “Our research proves exactly what that biological cost [of warming] looks like underwater.”
- TOO HOT FOR COFFEE: According to new analysis by Climate Central, countries where coffee beans are grown “are becoming too hot to cultivate them”, reported the Guardian. The world’s top five coffee-growing countries faced “57 additional days of coffee-harming heat” annually because of climate change, it added.
Spotlight
Nature talks inch forward
This week, Carbon Brief covers the latest round of negotiations under the UN Convention on Biological Diversity (CBD), which occurred in Rome over 16-19 February.
The penultimate set of biodiversity negotiations before October’s Conference of the Parties ended in Rome last week, leaving plenty of unfinished business.
The CBD’s subsidiary body on implementation (SBI) met in the Italian capital for four days to discuss a range of issues, including biodiversity finance and reviewing progress towards the nature targets agreed under the Kunming-Montreal Global Biodiversity Framework (GBF).
However, many of the major sticking points – particularly around finance – will have to wait until later this summer, leaving some observers worried about the capacity for delegates to get through a packed agenda at COP17.
The SBI, along with the subsidiary body on scientific, technical and technological advice (SBSTTA) will both meet in Nairobi, Kenya, later this summer for a final round of talks before COP17 kicks off in Yerevan, Armenia, on 19 October.
Money talks
Finance for nature has long been a sticking point at negotiations under the CBD.
Discussions on a new fund for biodiversity derailed biodiversity talks in Cali, Colombia, in autumn 2024, requiring resumed talks a few months later.
Despite this, finance was barely on the agenda at the SBI meetings in Rome. Delegates discussed three studies on the relationship between debt sustainability and implementation of nature plans, but the more substantive talks are set to take place at the next SBI meeting in Nairobi.
Several parties “highlighted concerns with the imbalance of work” on finance between these SBI talks and the next ones, reported Earth Negotiations Bulletin (ENB).
Lim Li Ching, senior researcher at Third World Network, noted that tensions around finance permeated every aspect of the talks. She told Carbon Brief:
“If you’re talking about the gender plan of action – if there’s little or no financial resources provided to actually put it into practice and implement it, then it’s [just] paper, right? Same with the reporting requirements and obligations.”
Monitoring and reporting
Closely linked to the issue of finance is the obligations of parties to report on their progress towards the goals and targets of the GBF.
Parties do so through the submission of national reports.
Several parties at the talks pointed to a lack of timely funding for driving delays in their reporting, according to ENB.
A note released by the CBD Secretariat in December said that no parties had submitted their national reports yet; by the time of the SBI meetings, only the EU had. It further noted that just 58 parties had submitted their national biodiversity plans, which were initially meant to be published by COP16, in October 2024.
Linda Krueger, director of biodiversity and infrastructure policy at the environmental not-for-profit Nature Conservancy, told Carbon Brief that despite the sparse submissions, parties are “very focused on the national report preparation”. She added:
“Everybody wants to be able to show that we’re on the path and that there still is a pathway to getting to 2030 that’s positive and largely in the right direction.”
Watch, read, listen
NET LOSS: Nigeria’s marine life is being “threatened” by “ghost gear” – nets and other fishing equipment discarded in the ocean – said Dialogue Earth.
COMEBACK CAUSALITY: A Vox long-read looked at whether Costa Rica’s “payments for ecosystem services” programme helped the country turn a corner on deforestation.
HOMEGROWN GOALS: A Straits Times podcast discussed whether import-dependent Singapore can afford to shelve its goal to produce 30% of its food locally by 2030.
‘RUSTING’ RIVERS: The Financial Times took a closer look at a “strange new force blighting the [Arctic] landscape”: rivers turning rust-orange due to global warming.
New science
- Lakes in the Congo Basin’s peatlands are releasing carbon that is thousands of years old | Nature Geoscience
- Natural non-forest ecosystems – such as grasslands and marshlands – were converted for agriculture at four times the rate of land with tree cover between 2005 and 2020 | Proceedings of the National Academy of Sciences
- Around one-quarter of global tree-cover loss over 2001-22 was driven by cropland expansion, pastures and forest plantations for commodity production | Nature Food
In the diary
- 2-6 March: UN Food and Agriculture Organization regional conference for Latin America and Caribbean | Brasília
- 5 March: Nepal general elections
- 9-20 March: First part of the thirty-first session of the International Seabed Authority (ISA) | Kingston, Jamaica
Cropped is researched and written by Dr Giuliana Viglione, Aruna Chandrasekhar, Daisy Dunne, Orla Dwyer and Yanine Quiroz.
Please send tips and feedback to cropped@carbonbrief.org
The post Cropped 25 February 2026: Food inflation strikes | El Niño looms | Biodiversity talks stagnate appeared first on Carbon Brief.
Cropped 25 February 2026: Food inflation strikes | El Niño looms | Biodiversity talks stagnate
Rising temperatures across France since the mid-1970s is putting Tour de France competitors at “high risk”, according to new research.
The study, published in Scientific Reports, uses 50 years of climate data to calculate the potential heat stress that athletes have been exposed to across a dozen different locations during the world-famous cycling race.
The researchers find that both the severity and frequency of high-heat-stress events have increased across France over recent decades.
But, despite record-setting heatwaves in France, the heat-stress threshold for safe competition has rarely been breached in any particular city on the day the Tour passed through.
(This threshold was set out by cycling’s international governing body in 2024.)
However, the researchers add it is “only a question of time” until this occurs as average temperatures in France continue to rise.
The lead author of the study tells Carbon Brief that, while the race organisers have been fortunate to avoid major heat stress on race days so far, it will be “harder and harder to be lucky” as extreme heat becomes more common.
‘Iconic’
The Tour de France is one of the world’s most storied cycling races and the oldest of Europe’s three major multi-week cycling competitions, or Grand Tours.
Riders cover around 3,500 kilometres (km) of distance and gain up to nearly 55km of altitude over 21 stages, with only two or three rest days throughout the gruelling race.
The researchers selected the Tour de France because it is the “iconic bike race. It is the bike race of bike races,” says Dr Ivana Cvijanovic, a climate scientist at the French National Research Institute for Sustainable Development, who led the new work.
Heat has become a growing problem for the competition in recent years.
In 2022, Alexis Vuillermoz, a French competitor, collapsed at the finish line of the Tour’s ninth stage, leaving in an ambulance and subsequently pulling out of the race entirely.
Two years later, British cyclist Sir Mark Cavendish vomited on his bike during the first stage of the race after struggling with the 36C heat.
The Tour also makes a good case study because it is almost entirely held during the month of July and, while the route itself changes, there are many cities and stages that are repeated from year to year, Cvijanovic adds.
‘Have to be lucky’
The study focuses on the 50-year span between 1974 and 2023.
The researchers select six locations across the country that have commonly hosted the Tour, from the mountain pass of Col du Tourmalet, in the French Pyrenees, to the city of Paris – where the race finishes, along the Champs-Élysées.
These sites represent a broad range of climatic zones: Alpe d’ Huez, Bourdeaux, Col du Tourmalet, Nîmes, Paris and Toulouse.
For each location, they use meteorological reanalysis data from ERA5 and radiant temperature data from ERA5-HEAT to calculate the “wet-bulb globe temperature” (WBGT) for multiple times of day across the month of July each year.
WBGT is a heat-stress index that takes into account temperature, humidity, wind speed and direct sunlight.
Although there is “no exact scientific consensus” on the best heat-stress index to use, WBGT is “one of the rare indicators that has been originally developed based on the actual human response to heat”, Cvijanovic explains.
It is also the one that the International Cycling Union (UCI) – the world governing body for sport cycling – uses to assess risk. A WBGT of 28C or higher is classified as “high risk” by the group.
WBGT is the “gold standard” for assessing heat stress, says Dr Jessica Murfree, director of the ACCESS Research Laboratory and assistant professor at the University of North Carolina at Chapel Hill.
Murfree, who was not involved in the new study, adds that the researchers are “doing the right things by conducting their science in alignment with the business practices that are already happening”.
The researchers find that across the 50-year time period, WBGT has been increasing across the entire country – albeit, at different rates. In the north-west of the country, WBGT has increased at an average rate of 0.1C per decade, while in the southern and eastern parts of the country, it has increased by more than 0.5C per decade.
The maps below show the maximum July WBGT for each decade of the analysis (rows) and for hourly increments of the late afternoon (columns). Lower temperatures are shown in lighter greens and yellows, while higher temperatures are shown in darker reds and purples.
Six Tour de France locations analysed in the study are shown as triangles on the maps (clockwise from top): Paris, Alpe d’ Huez, Nîmes, Toulouse, Col du Tourmalet and Bordeaux.
The maps show that the maximum WBGT temperature in the afternoon has surpassed 28C over almost the entire country in the last decade. The notable exceptions to this are the mountainous regions of the Alps and the Pyrenees.
The researchers also find that most of the country has crossed the 28C WBGT threshold – which they describe as “dangerous heat levels” – on at least one July day over the past decade. However, by looking at the WBGT on the day the Tour passed through any of these six locations, they find that the threshold has rarely been breached during the race itself.
For example, the research notes that, since 1974, Paris has seen a WBGT of 28C five times at 3pm in July – but that these events have “so far” not coincided with the cycling race.
The study states that it is “fortunate” that the Tour has so far avoided the worst of the heat-stress.
Cvijanovic says the organisers and competitors have been “lucky” to date. She adds:
“It has worked really well for them so far. But as the frequency of these [extreme heat] events is increasing, it will be harder and harder to be lucky.”
Dr Madeleine Orr, an assistant professor of sport ecology at the University of Toronto who was not involved in the study, tells Carbon Brief that the paper was “really well done”, noting that its “methods are good [and its] approach was sound”. She adds:
“[The Tour has] had athletes complain about [the heat]. They’ve had athletes collapse – and still those aren’t the worst conditions. I think that that says a lot about what we consider safe. They’ve still been lucky to not see what unsafe looks like, despite [the heat] having already had impacts.”
Heat safety protocols
In 2024, the UCI set out its first-ever high temperature protocol – a set of guidelines for race organisers to assess athletes’ risk of heat stress.
The assessment places the potential risk into one of five categories based on the WBGT, ranging from very low to high risk.
The protocol then sets out suggested actions to take in the event of extreme heat, ranging from having athletes complete their warm-ups using ice vests and cold towels to increasing the number of support vehicles providing water and ice.
If the WBGT climbs above the 28C mark, the protocol suggests that organisers modify the start time of the stage, adapt the course to remove particularly hazardous sections – or even cancel the race entirely.
However, Orr notes that many other parts of the race, such as spectator comfort and equipment functioning, may have lower temperatures thresholds that are not accounted for in the protocol, but should also be considered.
Murfree points out that the study’s findings – and the heat protocol itself – are “really focused on adaptation, rather than mitigation”. While this is “to be expected”, she tells Carbon Brief:
“Moving to earlier start times or adjusting the route specifically to avoid these locations that score higher in heat stress doesn’t stop the heat stress. These aren’t climate preventative measures. That, I think, would be a much more difficult conversation to have in the research because of the Tour de France’s intimate relationship with fossil-fuel companies.”
The post Dangerous heat for Tour de France riders only a ‘question of time’ appeared first on Carbon Brief.
Dangerous heat for Tour de France riders only a ‘question of time’
Greenhouse Gases
DeBriefed 20 February 2026: EU’s ‘3C’ warning | Endangerment repeal’s impact on US emissions | ‘Tree invasion’ fuelled South America’s fires
Welcome to Carbon Brief’s DeBriefed.
An essential guide to the week’s key developments relating to climate change.
This week
Preparing for 3C
NEW ALERT: The EU’s climate advisory board urged countries to prepare for 3C of global warming, reported the Guardian. The outlet quoted Maarten van Aalst, a member of the advisory board, saying that adapting to this future is a “daunting task, but, at the same time, quite a doable task”. The board recommended the creation of “climate risk assessments and investments in protective measures”.
‘INSUFFICIENT’ ACTION: EFE Verde added that the advisory board said that the EU’s adaptation efforts were so far “insufficient, fragmented and reactive” and “belated”. Climate impacts are expected to weaken the bloc’s productivity, put pressure on public budgets and increase security risks, it added.
UNDERWATER: Meanwhile, France faced “unprecedented” flooding this week, reported Le Monde. The flooding has inundated houses, streets and fields and forced the evacuation of around 2,000 people, according to the outlet. The Guardian quoted Monique Barbut, minister for the ecological transition, saying: “People who follow climate issues have been warning us for a long time that events like this will happen more often…In fact, tomorrow has arrived.”
IEA ‘erases’ climate
MISSING PRIORITY: The US has “succeeded” in removing climate change from the main priorities of the International Energy Agency (IEA) during a “tense ministerial meeting” in Paris, reported Politico. It noted that climate change is not listed among the agency’s priorities in the “chair’s summary” released at the end of the two-day summit.
US INTERVENTION: Bloomberg said the meeting marked the first time in nine years the IEA failed to release a communique setting out a unified position on issues – opting instead for the chair’s summary. This came after US energy secretary Chris Wright gave the organisation a one-year deadline to “scrap its support of goals to reduce energy emissions to net-zero” – or risk losing the US as a member, according to Reuters.
Around the world
- ISLAND OBJECTION: The US is pressuring Vanuatu to withdraw a draft resolution supporting an International Court of Justice ruling on climate change, according to Al Jazeera.
- GREENLAND HEAT: The Associated Press reported that Greenland’s capital Nuuk had its hottest January since records began 109 years ago.
- CHINA PRIORITIES: China’s Energy Administration set out its five energy priorities for 2026-2030, including developing a renewable energy plan, said International Energy Net.
- AMAZON REPRIEVE: Deforestation in the Brazilian Amazon has continued to fall into early 2026, extending a downward trend, according to the latest satellite data covered by Mongabay.
- GEZANI DESTRUCTION: Reuters reported the aftermath of the Gezani cyclone, which ripped through Madagascar last week, leaving 59 dead and more than 16,000 displaced people.
20cm
The average rise in global sea levels since 1901, according to a Carbon Brief guest post on the challenges in projecting future rises.
Latest climate research
- Wildfire smoke poses negative impacts on organisms and ecosystems, such as health impacts on air-breathing animals, changes in forests’ carbon storage and coral mortality | Global Ecology and Conservation
- As climate change warms Antarctica throughout the century, the Weddell Sea could see the growth of species such as krill and fish and remain habitable for Emperor penguins | Nature Climate Change
- About 97% of South American lakes have recorded “significant warming” over the past four decades and are expected to experience rising temperatures and more frequent heatwaves | Climatic Change
(For more, see Carbon Brief’s in-depth daily summaries of the top climate news stories on Monday, Tuesday, Wednesday, Thursday and Friday.)
Captured
Repealing the US’s landmark “endangerment finding”, along with actions that rely on that finding, will slow the pace of US emissions cuts, according to Rhodium Group visualised by Carbon Brief. US president Donald Trump last week formally repealed the scientific finding that underpins federal regulations on greenhouse gas emissions, although the move is likely to face legal challenges. Data from the Rhodium Group, an independent research firm, shows that US emissions will drop more slowly without climate regulations. However, even with climate regulations, emissions are expected to drop much slower under Trump than under the previous Joe Biden administration, according to the analysis.
Spotlight
How a ‘tree invasion’ helped to fuel South America’s fires
This week, Carbon Brief explores how the “invasion” of non-native tree species helped to fan the flames of forest fires in Argentina and Chile earlier this year.
Since early January, Chile and Argentina have faced large-scale and deadly wildfires, including in Patagonia, which spans both countries.
These fires have been described as “some of the most significant and damaging in the region”, according to a World Weather Attribution (WWA) analysis covered by Carbon Brief.
In both countries, the fires destroyed vast areas of native forests and grasslands, displacing thousands of people. In Chile, the fires resulted in 23 deaths.
Multiple drivers contributed to the spread of the fires, including extended periods of high temperatures, low rainfall and abundant dry vegetation.
The WWA analysis concluded that human-caused climate change made these weather conditions at least three times more likely.
According to the researchers, another contributing factor was the invasion of non-native trees in the regions where the fires occurred.
The risk of non-native forests
In Argentina, the wildfires began on 6 January and persisted until the first week of February. They hit the city of Puerto Patriada and the Los Alerces and Lago Puelo national parks, in the Chubut province, as well as nearby regions.
In these areas, more than 45,000 hectares of native forests – such as Patagonian alerce tree, myrtle, coigüe and ñire – along with scrubland and grasslands, were consumed by the flames, according to the WWA study.
In Chile, forest fires occurred from 17 to 19 January in the Biobío, Ñuble and Araucanía regions.
The fires destroyed more than 40,000 hectares of forest and more than 20,000 hectares of non-native forest plantations, including eucalyptus and Monterey pine.
Dr Javier Grosfeld, a researcher at Argentina’s National Scientific and Technical Research Council (CONICET) in northern Patagonia, told Carbon Brief that these species, introduced to Patagonia for production purposes in the late 20th century, grow quickly and are highly flammable.
Because of this, their presence played a role in helping the fires to spread more quickly and grow larger.
However, that is no reason to “demonise” them, he stressed.
Forest management
For Grosfeld, the problem in northern Patagonia, Argentina, is a significant deficit in the management of forests and forest plantations.
This management should include pruning branches from their base and controlling the spread of non-native species, he added.
A similar situation is happening in Chile, where management of pine and eucalyptus plantations is not regulated. This means there are no “firebreaks” – gaps in vegetation – in place to prevent fire spread, Dr Gabriela Azócar, a researcher at the University of Chile’s Centre for Climate and Resilience Research (CR2), told Carbon Brief.
She noted that, although Mapuche Indigenous communities in central-south Chile are knowledgeable about native species and manage their forests, their insight and participation are not recognised in the country’s fire management and prevention policies.
Grosfeld stated:
“We are seeing the transformation of the Patagonian landscape from forest to scrubland in recent years. There is a lack of preventive forestry measures, as well as prevention and evacuation plans.”
Watch, read, listen
FUTURE FURNACE: A Guardian video explored the “unbearable experience of walking in a heatwave in the future”.
THE FUN SIDE: A Channel 4 News video covered a new wave of climate comedians who are using digital platforms such as TikTok to entertain and raise awareness.
ICE SECRETS: The BBC’s Climate Question podcast explored how scientists study ice cores to understand what the climate was like in ancient times and how to use them to inform climate projections.
Coming up
- 22-27 February: Ocean Sciences Meeting, Glasgow
- 24-26 February: Methane Mitigation Europe Summit 2026, Amsterdam, Netherlands
- 25-27 February: World Sustainable Development Summit 2026, New Delhi, India
Pick of the jobs
- The Climate Reality Project, digital specialist | Salary: $60,000-$61,200. Location: Washington DC
- Intergovernmental Panel on Climate Change (IPCC), science officer in the IPCC Working Group I Technical Support Unit | Salary: Unknown. Location: Gif-sur-Yvette, France
- Energy Transition Partnership, programme management intern | Salary: Unknown. Location: Bangkok, Thailand
DeBriefed is edited by Daisy Dunne. Please send any tips or feedback to debriefed@carbonbrief.org.
This is an online version of Carbon Brief’s weekly DeBriefed email newsletter. Subscribe for free here.
The post DeBriefed 20 February 2026: EU’s ‘3C’ warning | Endangerment repeal’s impact on US emissions | ‘Tree invasion’ fuelled South America’s fires appeared first on Carbon Brief.
Since Donald Trump returned to the White House last year, his administration in the US has laid off thousands of scientists and frozen research grants worth billions of dollars.
The cutbacks have had far-reaching consequences for all areas of scientific research, extending all the way to Earth’s fragile polar regions, researchers say.
Speaking to Carbon Brief, polar researchers explain how Trump’s attacks on science have affected efforts to study climate change at Earth’s poles, including by disrupting fieldwork, preventing data collection and even forcing researchers to leave the US.
One climate scientist tells Carbon Brief that the administration’s decision to terminate the only US icebreaker used in Antarctica forced her to cancel her fieldwork at the last minute – with her scientific cargo still held up in Chile.
As US polar scientists reel from the cuts, Trump has caused a geopolitical storm with threats to take control of Greenland, the self-ruling island which is part of the Kingdom of Denmark and located between the Arctic and Atlantic oceans.
Below, Carbon Brief speaks to experts about what Trump’s sweeping changes could mean for climate science at Earth’s poles
- Why is the US important for polar research?
- How has Trump affected US polar research in his second term?
- What could the changes mean for international climate research at Earth’s poles?
- What could be the impact of Trump’s threats to take control of Greenland on climate research?
Why is the US important for polar research?
The US’s wealth, power and geography have made it a key player in polar research for more than a century.
Ahead of Trump’s second term, the National Science Foundation (NSF), a federal agency that funds US science, was the largest single funder of polar research globally, with its Office of Polar Programs overseeing extensive research in both the Arctic and Antarctica.
The US has three permanent bases in Antarctica: McMurdo Station, Amundsen-Scott South Pole Station and Palmer Station.
In Alaska, which the US purchased from Russia in 1867, there is the Toolik Field Station and the Barrow Arctic Research Center. The US also has the Summit Station in Greenland.
US institutes operate several satellites that provide scientists across the world with key data on the polar regions.
This includes the National Oceanic and Atmospheric Administration’s (NOAA) Joint Polar Satellite System, which provides data used for extreme weather forecasting.
Over the past few years, US institutes have led and provided support for the world’s largest polar expeditions.
This includes MOSAiC, the largest Arctic expedition on record, which took place from 2019-20 and was co-led by research institutes from the US and Germany. [Carbon Brief joined the expedition for its first leg and covered it in depth with a series of articles.]
The US has historically been “incredibly valuable” to research efforts in the Arctic and Antarctica, a senior US polar scientist currently living in Europe, who did not wish to be named, tells Carbon Brief.
“For a lot of the international collaborations, the US is a big component, if not the largest,” the scientist says.
“We do a lot of collaborative work with other countries,” adds Dr Jessie Creamean, an atmospheric scientist working in polar regions based at Colorado State University. “Doing work in the polar regions is really an international thing.”
How has Trump affected US polar research in his second term?
Since returning to office, the Trump administration has frozen or terminated 7,800 research grants from federal science agencies and laid off 25,000 scientists and personnel.
This includes nearly 2,000 research grants from the NSF, which is responsible for the Office for Polar Programs and for funding a broad range of climate and polar research.
Courts have since made orders to reinstate thousands of these grants and some universities have settled with the federal government to unfreeze funding. However, it is unclear whether scientists have yet received those funds.
As with other areas of US science, the impact of Trump’s attacks on polar research have been far-reaching and difficult to quantify, scientists tell Carbon Brief.
Key scientific institutions affected include NASA, NOAA and the National Center for Atmospheric Research (NCAR) in Colorado.
In December, the Trump administration signalled that it planned to dismantle NCAR, calling it a source of “climate alarmism”. At the end of January, the NSF published a letter that “doubled down” on the administration’s promise to “restructure” and “privatise” NCAR.
NCAR has been responsible for a host of polar research in recent years, with several NCAR scientists involved in the MOSAiC expedition.
“NCAR is kind of like a Mecca for atmospheric research,” the US polar scientist who did not want to be named tells Carbon Brief. “They’ve done so much. Now their funding is drying up and people are scrambling.”
At NOAA, one of the major polar programmes to be affected is the National Snow and Ice Data Center (NSIDC), which regularly issues updates about Arctic and Antarctic sea ice.
Last July, Space reported that researchers at NSIDC were informed by the Department of Defense – now renamed the Department of War under Trump – that they would lose access to data from a satellite operated by the US air force, which was used to calculate sea ice changes.
Although the Department of Defense reversed the decision following a public outcry, the uncertainty drove the researchers at NSIDC to switch to sourcing data from a Japanese satellite instead, explains Dr Zack Labe. Labe is a climate scientist who saw his position at NOAA terminated under the Trump administration and now works at the nonprofit research group Climate Central. He tells Carbon Brief:
“It looked like they were losing access to that data and, after public outcry, they regained access to the data. And then, later this year, they had to switch to another satellite.”
He adds that the Trump administration’s layoffs and budget cuts has also forced the programme to scale back its communications initiatives:
“A big loss at NSIDC is that they used to put out these monthly summaries of current conditions in Greenland, the Arctic and Antarctic called Sea Ice Today. It was a really important resource to describe the current weather and sea ice conditions in these regions.
“These reports went to stakeholders, they went to Indigenous communities within the Arctic. And that has stopped in the past year due to budget cuts.”
Elsewhere, the New York Times reported that a director at the Office for Polar Programs found out she was being laid off while on a trip to Antarctica.
US polar research took another hit in September, when the NSF announced that it was terminating the lease for the Nathaniel B Palmer, the only US icebreaker dedicated to Antarctic research.
The statement gave just one month’s notice, saying that the vessel would be returned to its operator in October.
Creamean was among the scientists who were affected by the termination. She tells Carbon Brief:
“I was supposed to go on that icebreaker in September. I have a project funded at Palmer Station, along with colleagues from Scripps Institution of Oceanography. We were supposed to go set up for an 18-month study there. We have the money for the project, but we just didn’t get to go because the icebreaker got decommissioned.
“It was a big bummer. We shipped everything down to South America. All of our cargo is still sitting in Punta Arenas [in Chile].”
Elsewhere, other scientists have warned that the termination of the icebreaker could affect the continuity of Antarctic data collection.
In a statement, Dr Naomi Ochwat, a glaciologist at the University of Colorado, Boulder, said that decades of data on changes to Antarctic glaciers taken from the deck of the Palmer had been vital to her research.
For some, one of the most worrying impacts of Trump’s attacks on US polar science is on the careers of scientists, which will likely lead to many of them leaving the country.
All of the researchers that Carbon Brief spoke to said they had heard many stories of US polar scientists deciding to relocate outside of the country or to leave the profession altogether.
Creamean is one of the polar scientists to make the difficult decision to temporarily leave the US. She says:
“I’m actually moving to Sweden for a year starting in May. I’m going to do a visiting science position [at Stockholm University]. I’m hoping to come back. But if things are not looking good and things are looking more positive in Sweden, maybe I’ll stay there. I don’t know.”
Labe tells Carbon Brief that the “brain drain” of US scientists is the “biggest story” when it comes to Trump’s impact on polar research:
“I think one of the long-term repercussions is just how many people will be forced out of science due to a lack of opportunities. I think this is something that will grow in 2026. There were a lot of grants that were two-to-three years and, so, were still running, but they will be ending now.”
What could the changes mean for international climate research at Earth’s poles?
With all research at Earth’s poles relying heavily on international collaboration, Trump’s attacks on science are likely to have far-reaching implications outside of the US, scientists tell Carbon Brief.
One implication of budget and personnel cuts could be the loss of continuous data from US researchers, bases and satellites.
Many US polar datasets have been collected for decades and are relied upon by scientists and institutes around the world. This includes records for Arctic and Antarctica’s oceans, sea ice, atmosphere and wildlife.
Trump’s impact has highlighted to scientific organisations outside of the US how vulnerable US datasets can be to political changes, says Labe, adding:
“From a climate perspective, you need a consistent data record over a long period of time. Even a small gap in data caused by uncertainty can cause major issues in understanding long-term trends in the polar regions.
“Other scientific organisations around the world are realising that they’re going to have to find alternative sources for data.”
Creamean tells Carbon Brief that, while some datasets have been discontinued, researchers have made an effort to keep records going despite personnel and budget constraints. She says:
“I know at Summit Station in Greenland they had some instruments that were pulled out that had been measuring things like the surface energy budget for a long time. That dataset has been discontinued.
“Thankfully, some programmes have been able to somehow hold on and continue to do baseline measurements. There’s a station up in Alaska [Barrow] where, as far as I know, measurements have been maintained there. That’s good because some measurements up there have been happening since the 60s and 70s.”
Trump’s changes could also cast uncertainty over the US’s role in taking part and offering support to upcoming collaborative Arctic and Antarctic expeditions.
In addition to helping scientists better understand the impact of climate change on Earth’s polar regions, these expeditions have also enabled countries with testy geopolitical relationships to come together for a common goal, the US polar scientist who did not want to be named tells Carbon Brief.
For example, the MOSAiC expedition from 2019-20 saw the US and Germany work alongside Russian and Chinese research institutes to study the impact of climate change on the Arctic, says the scientist, adding:
“It was an international collaboration that involved people who should be geopolitical enemies. Science is a way that we seem to be able to work together, to solve problems together, because we all live on one planet. And, right now, to see these changes in the US, it’s quite concerning [for these kinds of collaborations].”
The retreat of the US from polar research might see other powers step up to fill the gap, scientists tell Carbon Brief.
Several scientists mentioned the Nordic countries as possibly taking a larger role in leading polar research, while one said that “China seems to be picking up the slack that’s left behind”.
China currently has five Antarctic research stations – Great Wall, Zhongshan, Kunlun, Taishan and Qinling – along with one Arctic station in Ny-Ålesund, Svalbard.
The Financial Times recently reported on China’s growing ambitions for Arctic exploration, involving its fleet of five icebreakers.
What could be the impact of Trump’s threats to take control of Greenland on climate research?
In recent months, Trump has whipped up a media frenzy with threats to take control of Greenland, the world’s largest island lying between the Arctic and Atlantic oceans, which is self-governing and part of the Kingdom of Denmark.
Last month, he clarified that he will not try to take Greenland “by force”, but that he is seeking “immediate negotiations” to acquire the island for “national security reasons”.
Trump’s interest in the island is likely influenced by the rapid melting away of Arctic sea ice due to climate change, which is opening up new sea routes and avenues for potential resource exploitation, reported the Washington Post.
His comments have sparked condemnation from a wide range of US scientists who conduct fieldwork in Greenland.
An open letter signed by more than 350 scientists “vehemently opposes” Trump’s threats to take control of Greenland and expresses “solidarity and gratitude” to Greenland’s population. It says:
“Greenland deserves the world’s attention: it occupies a key position geopolitically and geophysically. As climate warms, rapid loss of Greenland’s ice affects coastal cities and communities worldwide.”
A breakdown in diplomatic relations between the US and Greenland could prevent scientists from being able to carry out their climate research on the island, one of the scientists to sign the letter wrote in a supporting statement:
“Scientific access to Arctic environments is essential for research which secures our shared future and, directly, materially benefits American citizens. It is deeply upsetting that these essential relationships are being undermined, perhaps irreparably, by the Trump administration.”
Dr Yarrow Axford, one of the letter’s organisers who is a palaeoclimatologist and science communicator based in Massachusetts, told Nature that Trump’s comments could put Greenland climate research at risk, saying:
“We Americans have benefited from all these decades of peaceful partnership with Greenland. Scientific understanding of climate change has benefited tremendously. I hope scientists can reach out to Congress and point out what a wonderful partnership that is.”
In addition to the US-run Summit Station, there are at least eight other research stations in Greenland, operated by a range of institutions from across the world.
A major focus of research efforts in the region is the Greenland ice sheet, Earth’s second-largest body of ice which is rapidly melting away because of climate change.
The ice sheet holds enough freshwater to raise global sea levels by around more than seven metres, if melted completely.
Any political moves that could “jeopardise” the study of the Greenland ice sheet would be detrimental, says Creamean:
“Greenland is a ‘tipping point’ in that, the ice sheet melting, that could be one of the biggest contributors to sea level rise. It’s not like we can wait to study it, it needs to be understood now.”
The post Q&A: How Trump is threatening climate science in Earth’s polar regions appeared first on Carbon Brief.
Q&A: How Trump is threatening climate science in Earth’s polar regions
Cropped 25 February 2026: Food inflation strikes | El Niño looms | Biodiversity talks stagnate
Cropped 25 February 2026: Food inflation strikes | El Niño looms | Biodiversity talks stagnate
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