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Welcome to Carbon Brief’s DeBriefed.
An essential guide to the week’s key developments relating to climate change.

This week

UN adopts landmark opinion

ICJ OPINION: The UN has adopted a resolution backing a landmark world court opinion stating that countries have a legal obligation to address climate change, reported the Guardian. Some 141 countries voted in favour of the resolution, while only eight voted against: the US; Israel; Iran; Russia; Belarus; Saudi Arabia; Yemen; and Liberia. There were also 28 absentations, including India and Turkey, the host of COP31.

‘DETERMINED’: The text adopted by the UN general assembly “stresses” that “climate change is an unprecedented challenge of civilizational proportions” and says the assembly is “determined” to “translate the court’s findings into enhanced multilateral cooperation and accelerated climate action at all levels, consistent with international law”. The text “urges” states to implement measures including “transitioning away from fossil fuels in energy systems”. It also “requests” the next UN secretary general to report on progress in 2027 and adds a formal follow-up to the agenda of the UN general assembly in 2028.

AMENDMENTS REJECTED: A UN press summary detailed how countries rejected four proposed amendments to the text by a group of largely Arab nations. These amendments would have undercut the world court’s legal advice on countries’ climate obligations by saying its views should only be taken into account “as appropriate”. They also would have added a reference to 2C, instead of focusing on 1.5C alone, got rid of the formal follow-up process in 2028 and added a reference to the role of carbon capture and storage.

Scenario sceptic

‘GOOD RIDDANCE’: US president Donald Trump declared “good riddance” to a very high emissions modelling scenario in a Truth Social post on Saturday, misleadingly stating that “the United Nations TOP Climate Committee just admitted that its own projections (RCP8.5) were WRONG! WRONG! WRONG!” The post was quickly picked up by right-leaning media, including Fox News, the New York Post and the Australian.

NEW SCENARIOS: Trump’s claim follows the publication of a new set of emissions scenarios that will underpin research cited in the next set of reports from the Intergovernmental Panel on Climate Change (IPCC). In a guest post for Carbon Brief, scientists explained that the very high emissions scenario has “become implausible, based on trends in the costs of renewables, the emergence of climate policy and recent emission trends”.
TRUMP FACTCHECKED:Carbon Brief published a factcheck of Trump’s claims. It noted that the IPCC does not develop, control or own climate scenarios and has not published anything stating that any climate scenario is “wrong”. It added: “Projections suggest that the world is still on course for between 2.5C and 3C of warming…previously described as ‘catastrophic’ by the UN.”

Around the world

  • ADAPTATION NEEDED: The UK’s Climate Change Committee outlined how investing in adaptation now could produce “long-term savings”, Carbon Brief reported. UK ministers are preparing to accept a CCC recommendation to “set a legally binding goal of cutting emissions 87% by 2040”, reported the Times.
  • ELECTRIFY EVERYTHING: COP31 president-designate Murat Kurum told the Copenhagen climate ministerial that countries should be “decarbonising the way we generate electricity, but also expanding electrification into every sphere of life”, according to Climate Home News.
  • STAFF CUT: Australia’s national science agency, CSIRO, is preparing to fire one-third of the team working on the national climate model that provides future projections, reported the Guardian.
  • TARGET MISSED: An independent body has warned that Germany is expected to miss its 2030 climate goals and emit more CO2 than previously forecast, reported Reuters. According to Deutsche Welle, the country could breach its goal by up to 100m tonnes of CO2.
  • PEAK POWER: India’s peak power demand “smashed all records” on Tuesday, after the country’s ongoing heatwave drove a “sharp rise” in electricity consumption, according to the Economic Times. The record fell again on Thursday, said Reuters.

140

The number of countries in the world that have net-zero targets.

2

Major emitters that do not have a net-zero target – a group comprising Iran and the US, according to Carbon Brief analysis.


Latest climate research

  • Global warming above 4C is projected to cause large decreases in “climate connectivity” between habitats for land animals | Nature Climate Change
  • Around 6% of respiratory deaths in Brazil from 2010-20 were attributable to “non-optimal temperatures”, accounting for more than 66,000 excess deaths | PLOS Climate
  • Fungi that cause diseases in plants will approximately double in abundance around the Antarctic Peninsula by 2100 under a moderate emissions scenario | Global Change Biology

(For more, see Carbon Brief’s in-depth daily summaries of the top climate news stories on Monday, Tuesday, Wednesday, Thursday and Friday.)

Captured

Four charts showing that new coal plants hit '10-year high' in 2025

The world added nearly 100 gigawatts (GW) of new coal-power capacity in 2025 – the equivalent of roughly 100 large coal plants – according to the latest annual report from Global Energy Monitor (GEM). This is a ten-year high, according to Carbon Brief’s coverage, which noted that the world’s coal plants nevertheless generated less electricity. The chart above shows that 95% of the new coal plants were built in India and China last year.

Spotlight

Climate migration

This week, Carbon Brief speaks to experts at a conference on migration and climate change in London about what their research could mean for how people move around the world in the future.

Prof Kerilyn Schewel, assistant professor of sociology at the University of North Carolina at Chapel Hill

We have moved beyond a ‘push factor’ narrative – that climate change is coming and uprooting communities – to a more nuanced perspective that recognises that people are already moving for all kinds of reasons… [For example] the more that young people are accessing formal education, the more they want to leave – particularly rural communities. We have to be very careful not to assume that when people want to leave, it is always driven by climate change. There are other developmental factors that are also shaping desires to move. This is a research frontier – seeing how environmental factors intersect with these other social or developmental outcomes.

Dr Aromar Revi, founding director of the Indian Institute for Human Settlements

The future of mobility is much more certain than [climate change is]. People have been mobile for a very long time. That’s been an important part of the transformation of societies and economies for centuries…mobility is part of the solution [to climate change]. It is not the full solution, but it’s part of the solution. People are voting with their feet and with their aspirations to make a change.

Prof Nitya Rao, a professor of gender and development at the University of East Anglia

There are many things that the system can do to welcome migrants and be more sensitive to different types of migrants and their needs… In the short term, [migrants] need piped water, a proper home, care for young children…In the longer term, we have to address structural inequality. There are still barriers to people accessing resources – especially productive assets such as land, capital and livestock…And these barriers are split by gender, class, ethnicity and so on. These need to be addressed, I think, to really make migration a case of [climate] adaptation and not just survival.

Prof Jon Barnett, professor in the school of geography, earth and atmospheric sciences at the University of Melbourne

In the Pacific islands, international migration isn’t driven by climate change. It’s enabled by the capacity of people to cross borders, so it’s all about migration agreements. As climate change amplifies pressures on people’s livelihoods, we may end up with a whole series of transnational populations that are kind of constantly in churn – where they’re not just living on the island, but also in Australia, New Zealand, the US.

Dr Maria Franco Gavonel, lecturer in global social policy and international development at the University of York

The migration response towards almost any climate event is short lived and short distance, so it will mostly affect internal movement rather than international…So all these narratives about climate refugees – like human rights related to international migration – are overstating the extent to which this is going to happen.

Dr Benoy Peter, the executive director of the Centre for Migration and Inclusive Development in India

Every one of us, including you and me, have benefited from migration. Migration is the fastest way for intergenerational upward social mobility for people from socially and economically disadvantaged populations. So I see migration as a [climate] solution.

Cecilia Keating also contributed to this spotlight. Read more of Carbon Brief’s coverage of the conference.

Watch, read, listen

TICE QUESTIONED: The Bloomberg Zero podcast interviewed Richard Tice, the deputy leader of the hard-right Reform UK party, who exposed his rejection of climate science and support for the oil and gas industry.

‘CLIMATE CROSSROADS’: The Guardian examined how Colombia’s upcoming election could leave the major oil-and-gas producer at a “climate crossroads”.

LAND GRAB: A Floodlight investigation for Inside Climate News examined “Trump officials, billionaires and the quiet reshaping of America’s public lands”.

Coming up

Pick of the jobs

DeBriefed is edited by Daisy Dunne. Please send any tips or feedback to debriefed@carbonbrief.org.

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The post DeBriefed 22 May 2026: UN adopts landmark resolution | Trump takes on ‘RCP8.5’ | Climate migration appeared first on Carbon Brief.

DeBriefed 22 May 2026: UN adopts landmark resolution | Trump takes on ‘RCP8.5’ | Climate migration

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Climate Change

COP17 must settle who decides how Cali Fund money is disbursed

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June Rubis is a steering group committee member for the Cali Fund, from Sarawak in Malaysian Borneo.

At COP16 in Cali, governments made a significant commitment: at least half of the funding from the new Cali Fund should support the self-identified needs of Indigenous Peoples and local communities, including women and youth. It was a watershed moment for multilateral benefit-sharing.

The challenge now is to translate that commitment into access arrangements that recognise the different institutions, priorities and decision-making processes of Indigenous Peoples and local communities.

For generations, biodiversity and traditional Indigenous knowledge have provided significant value to companies who depend on nature’s genetic diversity to discover new drugs that fight diseases, create products that improve health, and grow crops resilient to extreme heat and flooding events. While some compounds are sampled directly from the source country, increasingly the digital blueprints are held in online public databases which are freely accessible to use for innovation and research.

Countries urged to ramp up “insufficient” nature policies at COP17

The Cali Fund was established at COP16 to encourage commercial users of Digital Sequence Information, or DSI, to share benefits arising from its use. Estimates suggest it could generate over $3.5 billion a year – a stark contrast to the modest $10,656 currently committed to the fund from just five SMEs, underlining how much progress must be made at COP17 over the next two weeks.

The COP16 decision that set up the fund offers two routes for money to reach Indigenous Peoples and local communities: through government authorities, and through direct payments to institutions identified by Indigenous Peoples and local communities themselves.

Varied ways of organising

Indigenous Peoples and local communities organise through a wide range of institutions. Some have national or regional organisations experienced in managing international grants. Others work through territorial organisations, customary institutions, community associations, cooperatives or networks. Some have professional finance teams and audited accounts; others have extensive experience governing territories, collective resources or conservation work without having been organised around international funding requirements.

For direct access, some questions are already apparent. Which institutions should be able to receive funds? How should they be identified? What fiduciary standards should apply? How should safeguards and accountability work where institutional capacities differ? What support may be needed where institutions have strong community mandates but less experience with international finance?

Comment: Protecting nature is a public duty, not a Wall Street profit opportunity

If access is designed mainly around institutions that already meet the expectations of large international finance mechanisms, early funding will tend to favour those already familiar to funders. They will gain further experience and become better positioned for future funding, while institutions with less administrative capacity may remain outside the system despite strong community mandates and long histories of stewardship.

These first decisions matter most, because they set the terms for everyone who follows.

The role of intermediaries requires care. Some Indigenous organisations may want a fiscal host to hold and manage funds on their behalf. Communities may choose to work through an NGO they trust. Government-facilitated arrangements may work well in particular national contexts.

What matters is the function an intermediary performs and the authority that comes with it. Providing administrative support is different from deciding which Indigenous organisations qualify, which priorities can receive support, or how success will be assessed. Direct access means communities keep that decision-making authority.

Decision-making power

The COP16 decision refers to institutions that Indigenous Peoples and local communities identify. But authority among Indigenous Peoples does not sit in one kind of body. It may sit with territorial organisations, customary institutions, community associations or combinations of these. Legal recognition and customary authority do not always align neatly.

Global deforestation slowed in 2025 but Brazil’s election could undo “fragile” gains

An important feature of the Cali Fund’s governance is that Indigenous Peoples and local communities participate as full members of the Steering Committee, rather than as observers. Seven Indigenous Peoples and local community representatives, one from each of the seven socio-cultural regions, participate in consensus-based decision-making alongside representatives of governments and UN entities. Six additional representatives from civil society, scientific institutions and the private sector participate as observers.

That representation carries responsibility. Institutional legitimacy, access and representation take different forms across the seven socio-cultural regions. Indigenous Peoples and local communities members therefore have an important role in bringing those differences into the Fund’s governance and in ensuring that arrangements developed for one context do not become the assumed model for everyone else. 

Safeguards and clear responsibilities

COP17 can establish the core principles and direction, while allowing operational pathways to develop in ways that respond to different regional contexts. The decisions countries take in Yerevan will shape how that flexibility is realised in practice. 

The choices made around access will influence which institutions are able to participate, which routes become established and which forms of authority are recognised within the funding architecture. The aim should be an architecture with enough structure to maintain confidence while allowing for different forms of Indigenous and community governance.

A credible direct-access pathway will need safeguards, financial oversight and clear responsibilities. This would give the 50% commitment a stronger institutional foundation.

The Cali Fund’s importance will ultimately depend not only on how much funding reaches Indigenous Peoples and local communities, but on whether they are able to determine how the money is accessed, governed and used. This requires access pathways that recognise their institutions, priorities and decision-making processes, rather than requiring them to conform to a single predetermined model.

The post COP17 must settle who decides how Cali Fund money is disbursed appeared first on Climate Home News.

COP17 must settle who decides how Cali Fund money is disbursed

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UK approves gas drilling despite admitting blow to “climate leadership” status

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The UK government has approved extraction at the Jackdaw gas field in the North Sea, despite acknowledging that this decision could make it harder for Britain to convince other countries to move away from fossil fuel production.

UK energy secretary Miatta Fahnbulleh approved the drilling on Wednesday after months of high-profile debate, fuelled in part by interventions from US President Donald Trump. She argued that the project would boost energy security in the wake of the Middle East fossil fuel crisis, protect hundreds of jobs and add £2.9 billion ($3.88bn) to the UK economy.

She said Jackdaw’s gas would be cleaner than imported gas and would not prevent the UK from meeting its legally-binding carbon targets and its goal of net zero by 2050. As the field is already licensed, she said extraction was consistent with the Labour Party’s 2024 manifesto promise not to issue any new oil and gas licenses.

The same morning, the government announced a new Energy Wealth Fund to reinvest oil and gas revenues in the climate transition. It will start with £2 billion ($2.67bn) from the government and be topped up over time with tax revenues from offshore oil and gas production.

Energy Secretary Miatta Fahnbulleh and Chancellor of the Exchequer John Healey leave 10 Downing Street following Prime Minister Andy Burnham’s first cabinet meeting, on July 21, 2026 in London, England. (Photo by Ben Montgomery/Getty Images)

Climate campaigners in the UK and abroad were quick to condemn the decision, while a leading legal expert told Climate Home News it goes against the advice of the International Court of Justice. Meanwhile, the government’s own documents reveal that it recognises the drilling could damage the UK’s reputation and its ability to push forward the global transition away from fossil fuels.

“Climate leadership” blow

The 92-page decision document says Fahnbulleh “acknowledges that international standing on climate is important and accepts that a decision to grant consent may not further the UK’s international climate leadership.”

It adds: “She acknowledges concerns about the potential implications for the UK’s credibility and influence – including the difficulty inherent in encouraging other states to move away from fossil fuel production while the UK continues, in a limited and transitional way, to draw on its own domestic resources.”

While noting that Jackdaw has not been issued with a new license – just permission to extract gas – the document says Fahnbulleh “accepts this does not fully resolve the underlying tension in the UK’s position” but “considers this alongside the substance of the UK’s wider record [on emissions reduction], which remains significant”.

It continues that she accepts these concerns are “legitimate” and weigh against approving gas extraction, but only gives this argument a “moderate negative weight” set against the benefits of gas production.

“Huge” wrong signal

In international climate talks, the UK has long supported the transition away from fossil fuels and is one of very few major oil and gas producers to ban new licenses. Across the North Sea, the Norwegian government continues to make offshore areas available for oil and gas exploration through annual licensing rounds.

Climate experts and campaigners shared the concern, acknowledged in the decision document, that approving Jackdaw could set a precedent for fossil fuel production elsewhere. Sam Fankhauser, professor of climate change economics at Oxford University, said the direct climate impact of Jackdaw is “much smaller than the debate around it would suggest” but the “wrong signal it sends, however, is huge”.

    Bob Ward, policy and communications director at the Grantham Research Institute on Climate Change, said that while Jackdaw’s output will be very small, “it will signal to other fossil fuel producers that they too should carry on with business as usual, less than a month before the COP31”.

    Kenyan campaigner Mohamed Adow, director of Power Shift Africa, called the decision “a serious blow to Britain’s international climate credibility” as “the UK cannot expect developing countries to move away from fossil fuels while giving the green light to new drilling in its own backyard”.

    International Court of Justice

    In July 2025, the International Court of Justice (ICJ) advised that government failure to take appropriate climate action “including through fossil fuel production” may amount to an internationally wrongful act.

    The UK voted in favour of a United Nations resolution welcoming the advisory opinion. Yet, in its Jackdaw decision document, it notes that the ICJ opinion is not legally binding and says the UK does not accept the court’s opinion that the customary international law duty to prevent significant harm to the environment applies to climate change.

    Fahnbulleh concludes that, although it will have “significant effect on the environment”, gas drilling in Jackdaw “would not lead to significant harm to the environment” – and so does not breach any duty to prevent such harm. Instead, the government document says the duty should be considered “as a matter of policy rather than legal obligation”.

    Margaretha Wewerinke-Singh, who led Vanuatu’s legal team pushing for the ICJ’s advisory opinion, told Climate Home News that treating the duty as a matter of policy rather than legal obligation is “not how international law works”. “An advisory opinion is not a judgement,” she said, “but it states the law as it stands, and that law binds the UK whether or not it accepts it.”

    “Even as a matter of policy,” she added, “the decision asks the wrong question: whether Jackdaw on its own would cause significant harm. The Court found that accumulated emissions are already causing significant harm. What matters is whether approving new production is consistent with the stringent due diligence the duty requires.”

    Public support for decision

    While the decision was criticised by climate campaigners and the opposition Green party, polling reported by Politico suggests that 55% of British adults support drilling at Jackdaw, with just 14% opposed. Even supporters of the UK’s net zero target back new drilling by more than two to one, the polling found.

    Jackdaw is one of two North Sea oil and gas fields the government has been debating whether to extract more from for months. While Jackdaw is a small gas field, the other, Rosebank, is a much larger field that holds mostly oil.

    Rosebank’s emissions are estimated to be around seven times higher than Jackdaw’s. Fahnbulleh told Sky News that Rosebank is “different” to Jackdaw because its oil would be exported, whereas Jackdaw’s gas will be used in the UK, adding that she will consider it “in its own right”.