Welcome to Carbon Brief’s DeBriefed.
An essential guide to the week’s key developments relating to climate change.
This week
Trump ‘SOS’
‘CHAOS’ GRIPS: More than 1,900 scientists from US national academies of sciences, engineering and medicine wrote an “SOS letter” warning of the risks to science imposed by the current administration’s grant cuts and mass layoffs, reported the Guardian. The Guardian also said a “sense of chaos has gripped” the National Oceanic and Atmospheric Administration, after Trump-sanctioned layoffs have affected 20% of staff.
WEAKER STANDARDS: Trump is weighing returning to weaker car emissions standards from 2020, saying pollution limits introduced by Joe Biden are “too onerous” for motor companies, Bloomberg reported. The US transportation sector is the country’s leading source of greenhouse gas emissions.
TARIFFS TURMOIL: The New York Times said that the renewable energy industry in the US is “bracing for particularly large effects” from Trump’s ongoing tariffs war with the rest of the world. It noted that the turmoil is “expected to drive up the costs of nearly every component of clean-energy production in the US, from the steel in wind turbines to the batteries in electric vehicles”.
Around the world
- SOFTENING GOALS: EU Climate Commissioner Wopke Hoekstra is considering softening the bloc’s 2040 climate goal amid a “backlash” from some quarters, Politico said. A second Politico story reported that the release of the goal will be delayed while Hoekstra “struggles” to rally support.
- COAL STICKS: The world’s total coal-fired power “inched up” by 18.8 gigawatts in 2024, the lowest rise in two decades, with new additions in China and India continuing to offset closures elsewhere, according to Reuters coverage of a new Global Energy Monitor report.
- ASIA HEAT: Large swathes of India will experience intense heatwaves this summer with above normal temperatures expected across much of the country, the nation’s meteorological office has warned, according to BBC News.
- RENEWABLE AFRICA: Africa increased its renewable energy capacity by 6.7% last year, equivalent to 4.2GW, according to an International Renewable Energy Agency report covered by Energy Capital and Power. Egypt, Ethiopia and South Africa were among countries to build the most clean power.
40%
The percentage by which the “average person would become poorer” if the world warmed by 4C, according to an Environmental Research Letters study covered by the Guardian.
Latest climate research
- An “extraordinary” heatwave in Central Asia in March was made up to 10C hotter by human-caused climate change, a new World Weather Attribution analysis found.
- A Proceedings of the National Academy of Science study found that the limits of human heat tolerance are lower than previous estimates.
- Climate change has played a dominant role in destabilising communities of plankton, microorganisms that form the basis of the food web for marine wildlife, a new study in Communications Earth and Environment found.
(For more, see Carbon Brief’s in-depth daily summaries of the top climate news stories on Monday, Tuesday, Wednesday, Thursday and Friday.)
Captured

China’s exports of solar panels to the global south have doubled in the past two years, overtaking global-north sales for the first time since 2018, according to data from the thinktank Ember explained in a new Carbon Brief guest post. Saudi Arabia and Pakistan were among the top importers of Chinese solar panels in 2024.
Spotlight
Deep-sea mining talks
Carbon Brief explains the outcomes of the latest deep-sea mining talks held last week in Jamaica.
The deep sea has emerged as a new mining frontier in the global race towards energy security, with countries vying to explore and exploit its reserves of metals, such as nickel, copper, cobalt and manganese.
These minerals – critical to the energy transition – are held in the deep ocean’s nodules, hydrothermal vents and crusts, but the impacts of mining these deposits are still far from being fully understood.
In 2021, the Pacific island state of Nauru triggered a legal process for countries to agree rules around mining the seabed, or – in their absence – allow commercial mining of the deep sea to begin by 2025.
The UN Convention on the Law of the Sea (UNCLOS) is an international treaty that provides a framework to regulate the use of the world’s seas and oceans.
Among other bodies and orders, UNCLOS established the International Seabed Authority (ISA), which is based in Kingston, Jamaica, and oversees all resource extraction in the deep sea.
From 17-28 March this year, the ISA held the first part of its 30th annual session, with the aim of making progress on draft rules to govern commercial deep-sea mining.
Jamaica talks

The ISA said that there was “significant progress” on various aspects at the meeting and other areas that “require further deliberation”.
Some of this progress is the agreement to use the term “harmful effects” rather than “serious harm” to the marine environment, which aligns with the UN Convention on the Law of the Sea (UNCLOS), the Earth Negotiations Bulletin noted.
However, it added that there were “major issues unresolved”, related to “regulations” crucial for the protection of the marine environment, such as environmental impact assessments and the rights and interests of coastal states.
Duncan Currie, the international legal advisor to the Deep-Sea Conservation Coalition, said parties did not agree on any of the 55 reviewed regulations, but rather just discussed their positions on those regulations.
He also pointed out the lack of discussion over financial matters, liability, the royalties that are paid and the benefit sharing from deep-sea mining, telling Carbon Brief:
“There are 80 standards and guidelines that can’t be developed until [countries] have developed the regulations. I think most people think that they’re quite a long way away from being adopted.”
Current and future outlook
So far, 32 ISA member states are in favour of a moratorium on deep-sea mining, while other countries are seeking to exploit minerals in the seafloor “as soon as possible”.
Among those promoting the deep-sea mining industry are India, China and Norway, while countries such as Palau, Fiji and Samoa are promoting a “pause on deep-sea mining until its ecological impacts are better understood”, Carbon Brief previously reported.
In a surprise move that sent “alarm bells ringing” in the ISA and beyond, the US subsidiary of the Metals Company announced on 27 March that it is moving ahead with applying for deep-sea exploration permits under existing US legislation in the second quarter of 2025.
The announcement came on the last day of the ISA talks, where it dominated discussions at the end of the meeting.
On 31 March, Reuters reported that the Trump administration is “weighing an executive order” that could let miners bypass the ISA, its safeguards and “fast-track” permits. The US is not a party to UNCLOS.
Both developments signal that the ISA is “at a crossroads”, according to the Earth News Bulletin, and its next session in July will be closely watched for how the body responds to a potential unilateral action to allow deep sea-mining.
Watch, read, listen
NOT WITH SPORTS: A Discovery+ documentary explored how extreme weather is already affecting sport events.
STRENGTHENING MENTAL HEALTH: A psychologist writing in the Revelator offered strategies to reduce the effects of climate change on mental health.
FOSSIL LOBBY: Former UN climate chief Christiana Figueres and political strategist Tom Rivett-Carnac addressed the fossil fuel lobby within COPs on their Outrage and Optimism podcast.
Coming up
- 2-5 April: Global Youth Climate Summit, Belo Horizonte, Brazil
- 7 April: International Mother Earth Day
- 7-11 April: International Maritime Organization Marine Environment Protection Committee meeting (MEPC 83), London
Pick of the jobs
- Sky News, senior news editor – science, climate and technology | Salary: Unknown. Location: London
- Australian National University, postdoctoral research fellow in climate systems | Salary: AU$85,010-$131,227. Location: Canberra, Australia
- Dialogue Earth, social media officer | Salary: £36,035 per annum. Location: London
- Grantham Research Institute on Climate Change and the Environment, policy officer (adaptation policy and governance) | Salary: from £42,679-£54,730. Location: London
DeBriefed is edited by Daisy Dunne. Please send any tips or feedback to debriefed@carbonbrief.org.
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The post DeBriefed 4 April 2025: Scientists issue Trump ‘SOS’; EU climate goal in jeopardy; Deep-sea mining talks appeared first on Carbon Brief.
Climate Change
Whale Entanglements in Fishing Gear Surge Off U.S. West Coast During Marine Heatwaves
New research finds that rising ocean temperatures are shrinking cool-water feeding grounds, pushing humpbacks into gear-heavy waters near shore. Scientists say ocean forecasting tool could help fisheries reduce the risk.
Each spring, humpback whales start to feed off the coast of California and Oregon on dense schools of anchovies, sardines and krill—prey sustained by cool, nutrient-rich water that seasonal winds draw up from the deep ocean.
Whale Entanglements in Fishing Gear Surge Off U.S. West Coast During Marine Heatwaves
Climate Change
Grasslands and Wetlands Are Being Gobbled Up By Agriculture, Mostly Livestock
A new study takes a first-of-its kind look at how farming converts non-forested areas and major carbon sinks into cropland and pasture.
Agriculture is widely known to be the biggest driver of forest destruction globally, especially in sprawling, high-profile ecosystems like the Amazon rainforest.
Grasslands and Wetlands Are Being Gobbled Up By Agriculture, Mostly Livestock
Climate Change
Cropped 25 February 2026: Food inflation strikes | El Niño looms | Biodiversity talks stagnate
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.
Subscribe for free here.
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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Sign up to Carbon Brief’s free “Cropped” email newsletter. A fortnightly digest of food, land and nature news and views. Sent to your inbox every other Wednesday.
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
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