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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

Earth’s first climate ‘tipping point’ reached

CORAL IN CRISIS: A new report warned that the world has reached its first climate “tipping point” as global warming pushes warm-water coral reefs towards an irreversible decline, the Press Association outlined. The report, co-authored by more than 160 scientists in 23 countries, also warned the world is “on the brink” of reaching other tipping points, including the dieback of the Amazon, the collapse of major ocean currents and the loss of ice sheets, the Guardian noted.

CO2 RECORD: Carbon dioxide (CO2) in the atmosphere reached the highest level ever recorded last year, according to a new report by the UN’s World Meteorological Organization (WMO) covered by the Associated Press, which said it was fuelling “more extreme weather”. On top of burning fossil fuels, an increase in wildfires contributed to the rise in CO2 levels over the last year, Reuters reported.

DECLINING SINKS: The Guardian said WMO scientists are also “concerned” that the natural land and ocean “sinks” that remove CO2 from the air are “weakening as a result of global heating”. Separate new research concluded that Australia’s tropical rainforests are among the first in the world to start emitting more CO2 than they absorb, Agence France-Presse reported, with the decay of dead trees emitting more than the growing trunks and branches can store.

INCREASED EMISSIONS: Wildfires burned an area of land larger than India during the 2024-25 “global fire season”, emitting more than 8bn tonnes of CO2, almost 10% above average. This is according to the annual “state of wildfires” report covered by Carbon Brief, which also finds that four of the most prominent extreme wildfire events were found to have been more likely to occur as a result of human-caused climate change.

October extremes

MEXICO MOURNING: At least 66 people have died and 77 people are still missing after five days of torrential rain caused “historic” floods and landslides in Mexico, Reuters reported. The Associated Press said that the extreme weather “cut off 300 towns…from the outside world” and the New York Times reported Mexican president Claudia Sheinbaum saying that 100,000 homes were affected.

TYPHOONS TOO: At least 14 gold mine workers have been killed in floods after heavy rainfall in Venezuela, according to Agence France-Presse. At least one person was killed, two are missing and more than 1,500 people have been displaced across Alaska due to Typhoon Halong, the Associated Press reported.

Around the world

  • ‘HEADING FOR THE ROCKS’: US president Donald Trump’s plan to derail a global climate agreement for the shipping industry is “heading for the rocks”, as more than 100 nations gathered in London for talks to approve the legally binding regulation, with a decision expected today, the Financial Times reported.
  • COP FLOTILLA: A group of Amazon Indigenous peoples have departed from Ecuador to attend COP30, planning to travel more than 3,000km on rivers and grow in size along the way, according to Folha de São Paulo.
  • KIWI CONCERN: Scientists have warned that New Zealand’s decision to weaken its methane emissions reduction target, from a 24-47% cut on 2017 levels by 2050 to a 14-24% cut, sets a “worrying precedent”, said Bloomberg.
  • DIPLOMACY DETOUR: The EU plans to cooperate with US local authorities and businesses to “bypass” the federal government on clean energy, the Financial Times detailed.
  • VOTING VICTORY: After years of campaigning, citizens of Hamburg voted for stricter climate targets for the city during a referendum, reported Der Spiegel.
  • ‘ENVIRONMENTAL FREEFALL’: A report on the environmental damage after nearly two years of conflict found that Gaza’s energy, water, food and ecosystems have been “devastated” and are “on the brink of a total collapse”, the Independent outlined.

582 gigawatts

The record amount of new renewable energy capacity added globally in 2024, reported Reuters.


Latest climate research

  • Just seven African nations “would be able to satisfy their nutrient gaps” through production expansion, given water and land constraints | Nature Food
  • An experiment finds that generative artificial intelligence “can alter the information diet [climate] sceptics consume” | Nature Climate Change
  • While many frog species show “short-term resilience” to climate-induced wildfires, flooding poses an “underappreciated threat to frog biodiversity” in Australia | Biological Conservation

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

Captured

Carbon Brief sat down for an in-depth interview with Emma Pinchbeck, the chief executive of the UK’s Climate Change Committee (CCC). The CCC is a statutory body created under the Climate Change Act 2008 and is the official adviser to the UK government on climate change mitigation and adaptation. The conversation covered a range of topics from the UK’s high energy costs to talking to children about climate change.

Spotlight

Dr Helena Clements

Why paediatricians want climate action

This week, Carbon Brief speaks to Dr Helena Clements, a paediatrician who was appointed as the inaugural officer for climate change for the UK’s Royal College of Paediatrics and Child Health.

Carbon Brief: How does climate change risk children’s health?

Dr Helena Clements: In lots of ways. Partly it’s about the direct impacts of climate change on health and that might include air pollution as a really easy example here in the UK right now. We know about Ella Adoo-Kissi-Debrah who died of asthma induced [by] air pollution on her way to school and the little boy in [Rochdale], Awaab [Ishak], who died because of exposure to indoor air pollution. Those are two people that pediatricians have looked after and failed to save, who have been directly impacted by air pollution in this country. Of course it’s much worse in other parts of the world, particularly where people are cooking on open fires. It’s a global problem. 

For children who are exposed to air pollution, the answer isn’t to lock them up inside. It’s to clean the air by addressing the burning of fossil fuels. It’s about creating green spaces and active transport, because that’s better for our mental health, our physical well-being and we’re also cleaning the air. All of the solutions are solutions for climate change, as well as for health, and it’s not anything that I can prescribe.

Only about 20-30% of your health is down to what a doctor can do. I can treat asthma, but I’m not in control of the causes.

CB: How do you engage the medical community – and external groups – with health risks facing children from climate change?

HC: What I find helpful is to paint that picture of health and wellbeing, because if we had healthy children and adults, we would reduce demand on our services. I sometimes talk about being a lazy pediatrician. If everybody had their immunisations and a healthy diet, and we had clean air and families who had better health literacy, there would be much less work for me to do because most of what children need is good conditions to grow and thrive in.

A healthy diet is high in fibre, fruit and vegetables, which is also a lower-carbon diet. Pediatricians spend a lot of time treating constipation because children don’t eat a healthy diet and it’s rarely more complicated than that. We need to help children and families to eat more healthily to avoid things that need treatment and become more complex.

So there’s lots of benefits to focusing on the health and wellbeing side, rather than necessarily talking lots about the climate, but I talk about the two things simultaneously. Healthy people have a lower carbon impact than unhealthy people who require lots of medicines and trips to hospital.

CB: What else does your work in this intersection of climate change and children’s health involve?

HC: We’ve got three things really. One is advocating about climate itself because climate change is a health crisis, a massive risk, because of changing demographics and vector-borne diseases coming our way. The second thing is the NHS [National Health Service] is a very carbon-dense business, so we need to decarbonise. There’s the “how do we get rid of all these anesthetic gases or single-use items” practical changes that we need to make. And then there’s the fact that health is expensive and, if we were all healthier through, not directly tackling climate change, but say, tackling air pollution, we’d make health cheaper and be addressing climate change. You can tackle it from different lenses, but the solutions are all the same.

This interview has been edited for length.

Watch, read, listen

TORY LEGACY: Imperial College London’s Grantham Institute released a new Youtube video offering the “inside story” of the UK’s net-zero target, featuring former prime minister Theresa May.

BIG IN BRAZIL: With one month to go until COP30 begins in Belém, Brazil, Agence France-Presse listed “four Brazilians to watch” at the conference.

COX QUIZZED: In a new A Question of Science podcast, Prof Brian Cox and a panel of experts answered listener’s questions on everything from carbon capture to climate sceptics.

Coming up

Pick of the jobs

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: Earth’s first ‘tipping point’; Climate adviser interview; How warming affects children’s health appeared first on Carbon Brief.

DeBriefed 17 October 2025: Earth’s first ‘tipping point’; Climate adviser interview; How warming affects children’s health

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Climate Change

UN chief urges countries to adopt fossil fuel transition plans with timelines

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The head of the United Nations has called on all countries to deliver plans for phasing out their production and consumption of fossil fuels, as rising oil prices and climate shocks threaten energy and human security.

In his farewell speech to the UN General Assembly (UNGA) in New York on Tuesday, outgoing UN Secretary-General António Guterres for the first time urged “every government to adopt a national plan to transition away from fossil fuels” aligned with limiting warming to 1.5C. The plans, he said, should include “clear timelines and protection for affected workers and communities”.

“We know fossil fuel interests won’t step aside on their own. For decades, Big Oil has treated the atmosphere as an open sewer – and cashed in on the consequences,” Guterres told diplomats in his speech opening the leaders’ segment of the assembly, also calling out the industry’s windfall profits after Russia’s invasion of Ukraine.

    At last year’s COP30 climate summit in Belém, a group of about 80 governments led a failed push to develop a global roadmap to transition away from fossil fuels. Brazil instead proposed to draft a voluntary report that will be presented this year ahead of COP31 after countries and organisations submitted their views to the process.

    Governments first agreed to transition away from fossil fuels in energy systems at COP28 in Dubai in 2023, but have since failed to agree at UN climate talks on how to move forward with that commitment, as efforts to do so have been effectively blocked by large fossil fuel-producing countries.

    France, Netherlands issue plans

    A few countries have moved forward with their own transition plans. France launched the first one at an international conference on the issue in April and the Netherlands followed suit this month. Not being major fossil fuel producers, both European nations aim to end their coal, oil and gas consumption by 2050, although the Dutch plan was criticised for not setting specific phase-out dates for the dirty fuels.

    Adão Soares Barbosa, climate ambassador from Timor-Leste and chair of the Least Developed Countries (LDC) group in the UN climate negotiations, told a press briefing on Tuesday that last year’s discussions on shifting away from fossil fuels need to continue at COP31, adding that developed countries should lead the way with transition plans and curb their use of fossil fuels.

    “We are expecting that we can make a request to major-emitting countries to limit emissions from this sector,” he said. “For LDCs, we’ll also try to reduce fossil fuel use, but it will depend on national circumstances.”

    Samoa’s lead negotiator Anna Rasmussen said small island states have outlined their energy transition plans in their nationally determined contributions (NDCs) – countries’ plans for meeting the Paris Agreement goals – but added “we’re still waiting” for climate finance to help implement those plans.

    Despite the global push to clean up the energy mix, countries leading climate talks are themselves also expanding fossil fuel production. COP31 co-presidents Australia and Türkiye have both recently given the green light to mine and drill more coal, oil and gas, and still depend on fossil fuels for 60% and 56% of their electricity production respectively.

    Fossil fuel expansion threatens COP31 hosts’ credibility, experts warn

    COP30 host nation Brazil has also persisted with its plans to explore potential new oil reserves near the mouth of the Amazon River – a region known as the Equatorial Margin.

    These are moving ahead despite President Luiz Inácio Lula da Silva announcing last year at the Belém climate summit that the country would develop its own fossil fuel phase-out plan. This is still under development with little information about its progress and may be hampered by elections next month.

    “We have achieved our self sufficiency in oil and will continue to explore the potential of new reserves, such as those in the Equatorial Margin,” Lula said in his speech to the UNGA on Tuesday. “But we will not abandon the environmental agenda,” he insisted. “We will move forward with the roadmap for the decarbonisation of the Brazilian economy.”

    Transition far cheaper than status quo

    Speaking at the main Climate Week NYC venue, Mads Christensen, executive director of Greenpeace International, said given the fast-shifting cost dynamics for both fossil fuels and renewables, countries should revise their existing energy plans because they are now out of date.

    Gas power generation now costs around 150 euros per megawatt compared with around 50 euros for solar with battery storage – making the latter two-thirds cheaper.

    “If these plans were updated, I think we would have a much faster transition because it simply makes good financial sense,” he said.

    A technician walks next to solar panels that partially provide electrical power to the Grand Mosque of Istiqlal in Jakarta, Indonesia (Photo: REUTERS/Willy Kurniawan)

    A technician walks next to solar panels that partially provide electrical power to the Grand Mosque of Istiqlal in Jakarta, Indonesia (Photo: REUTERS/Willy Kurniawan)

    Tzeporah Berman, founder and chair of the Fossil Fuel Treaty Initiative, told Climate Home News that the Santa Marta process for transitioning away from fossil fuels (TAFF), launched at April’s conference, could help countries discuss, design and develop their national roadmaps, as well as mobilise the international cooperation required to actually deliver them.

    “Many countries want not only national roadmaps but a global roadmap off the highway to hell,” she added. “A global plan is necessary to ensure the rules aren’t rigged against those who want to do the right thing and so all countries can make credible commitments.”

    The second TAFF conference will be held in the Pacific island nation of Tuvalu next spring, co-chaired by Ireland. In New York, Tuvalu’s climate minister Maina Vakafua Talia called for stepped-up efforts to tackle the fossil fuel use that is threatening his country’s “demise” by driving global warming.

    “The world is running out of time, and so I ask every government to come to… Tuvalu with solutions – real solutions, not false solutions – for us to ensure that we have a pathway and a way forward,” he urged.

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    Climate Change

    COP31 electrification pledge leaves out clean power commitment

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    COP31’s flagship initiative to accelerate the electrification of the world’s economy has been criticised for failing to include a commitment to produce the power from clean energy.

    Governments that sign the voluntary pledge at this year’s UN climate summit will commit to increasing electricity’s share of total energy consumption to 35% globally by 2035 in line “with pathways consistent with keeping 1.5C alive”, the text unveiled by the Turkish presidency on Tuesday says.

    While the document says that the electrification goal is “complementary to efforts to expand renewable energy and improve energy efficiency”, governments are not explicitly asked to commit to producing the extra power with clean sources and driving down greenhouse gas emissions.

    The text instead says the “use of clean electricity” will vary according to national circumstances. Fossil fuels are not mentioned by name, although the pledge cites the COP28 Global Stocktake decision, which called for “transitioning away from fossil fuels” in energy systems.

      COP31 president Murat Kurum said earlier this month that the push to make electrification more “widespread” – through measures like the rollout of electric vehicles and heat pumps – will “automatically” lead to a reduction in the use of fossil fuels.

      But many campaigners disagree, criticising the proposed pledge for failing to give an explicit signal on the fossil fuel transition.

      Lack of clarity on energy sources

      “Let’s not let electrification become the Trojan horse of our times, used to hide new fossil fuel consumption rather than promote renewable energy,” Claire Smith from civil society umbrella group Beyond Fossil Fuels said in reaction to the pledge’s publication.

      She added that the commitment will only help address the climate crisis if electrification is powered by a flexible energy system where solar and wind are complemented by enhanced grids and storage.

      The pledge’s text says that the electricity goal should be supported by “diverse and sustainable energy sources”, but it stops short of explaining what these sources are.

      Alden Meyer, an international climate policy expert and senior associate at think-tank E3G, said the details of the pledge matter to how effective it will be in helping bring planet-heating emissions down.

      “It has to be clean, and we haven’t got enough clarity on a guarantee that it will be a decarbonisation move,” he told Climate Home News.

      China’s industrial engine starts to break its fossil fuel habit

      According to an annual electricity review from energy think-tank Ember, in 2025 renewables edged ahead of coal power for the first time in 100 years. Continued growth in solar and wind pushed the share of renewables above a third of global electricity generation to just under 34%, compared with coal at 33%, it said.

      Janet Milongo, energy Transition lead at CAN International, said success cannot be measured simply by how much of the world’s final energy consumption becomes electric.

      “We must ask what generates that electricity, who has access to it, who owns the infrastructure, and whether it is helping communities transition away from fossil fuels,” she added.

      Electrification alone can’t meet climate goals

      Analysis published by the IEA on Tuesday, alongside the pledge, found that it would already be cost-effective to raise electricity’s share of global energy use from 23% today to around 33% with existing technologies, putting the COP31 goal “within striking distance”. Based on current policies, however, the share reaches only about 30% by 2035.

      Hitting the 35% target would cut fossil fuel importers’ import bills by around $400 billion a year by 2035, the IEA said. At the higher prices caused by the conflict in the Middle East, that saving rises to more than $500 billion.

      Speaking at New York Climate Week on Tuesday, IEA executive director Fatih Birol said the agency’s figures show that in 2026, about 80% of all new power plants built will run on renewables, with a few percentage points coming from nuclear power and the rest from fossils fuels. “So therefore, electrification itself will lead reduction of the [greenhouse gas] emissions,” he added.

      IEA Executive Director Fatih Birol speaks at Climate Week NYC on September 22, 2026 (Photo: Megan Rowling / Climate Home News)

      IEA Executive Director Fatih Birol speaks at Climate Week NYC on September 22, 2026 (Photo: Megan Rowling / Climate Home News)

      However, the IEA warned in its new report that electrification “by itself is not enough” to meet the world’s climate targets. It noted that, if “low-emission” sources of power continue to simply grow in line with current policy scenarios, that would be only just enough to cover the extra demand from electrification, driving a modest decline in emissions.

      Matt Webb, associate director of global clean power diplomacy at E3G, said the pledge is a “welcome signal of leadership” and can help COP31 be a “critical moment” for countries to double down on the energy commitments made at COP28.

      But to secure the full benefits of electrification, he added, it is essential that we “urgently clean up” by speeding up the rollout of renewables and developing credible national plans to transition away from fossil fuels.

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      Climate Change

      As loss and damage fund stalls, Nepal crowdfunds flood relief

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      People around the world have donated almost $90 million to a government-led campaign to help Nepal recover from its recent devastating Himalayan flood, according to a Nepali climate negotiator, even as the UN chief slammed the tiny amount of money in a new fund to deal with such disasters.

      Individuals and companies from Nepal and abroad have chipped in from $5 to “many millions” of dollars to the Prime Minister’s Disaster Relief Fund, Manjeet Dhakal, an advisor to the poorest countries at UN climate talks, told an event on Monday focused on early warning systems.

      The prompt and substantial response from the public contrasts with the slower, more limited support that is potentially on offer from the UN’s new Fund for Responding to Loss and Damage (FRLD), set up by governments to compensate developing countries for climate disasters.

      Comment: Human security relies on adapting to the world’s new climate reality

      Over three weeks have passed since Nepal’s finance and environment ministers asked the FRLD board to take an urgent decision to allocate funding to help Nepal protect people and restore essential services in the wake of the disaster, which caused around 1,450 deaths and left more than 5,000 people missing.

      “Time is of the essence,” the ministers wrote in an appeal to the FRLD on August 31, which was swiftly followed by a letter from a group of developing-country board members urging the FRLD board’s co-chairs to organise an extraordinary meeting to come up with a response.

      Loss and damage fund hesitates

      Yet, despite informal online meetings, the co-chairs have yet to convene a meeting with the power to allocate funds. The board’s next scheduled meeting begins on December 15.

      Dhakal said on Monday that the request has “received some positive response, but still there is some discussion ongoing about how to respond to that”.

      “If they can’t respond in a timely manner, then is [the fund] fit for purpose in terms of disasters that the world would be facing in the coming years? The scale and intensity of these disasters is increasing,” he said.

      With just $820 million pledged to it by rich countries and not all of that yet delivered, the FRLD has earmarked just $350 million to spend in its initial phase and without further contributions could run out of money next year.

      Because of these limited funds, and a huge number of requests for funding totalling nearly $3 billion, the FRLD has said it will only give out a maximum of $20 million to each project for now. It has yet to approve funding for any projects.

      Dhakal recently told The Nation magazine that this amount was just a “symbolic gesture”. Nepal’s government has estimated the costs of recovery and reconstruction at $4.8 billion, with homes, roads, bridges, hospitals and hydropower stations in the affected area needing to be repaired and rebuilt.

      “Ridiculously small” funding

      In a speech to the UN General Assembly on Tuesday, the body’s outgoing Secretary-General António Guterres criticised the “ridiculously small” level of funds made available by wealthy governments to the FRLD. Developed countries should “make the loss and damage fund work at scale”, he said.

      Secretary-General António Guterres speaks at UNGA (Photo: UN Photo/ Loey Felipe)

      The Portuguese diplomat told world leaders that when he travelled to Nepal three years ago, he had “sounded the alarm on accelerating glacier melt, warning that the rooftops of the world are caving in”.

      “Some dismissed it all as overstating dangers, but as tragic events have shown, impacts are arriving sooner, hitting harder, and spreading further than many anticipated,” he said.

      A recent study by scientists with the World Weather Attribution group found that climate change contributed to the rock-ice avalanche which sparked a huge flash flood along a river valley on the Nepal-Tibet border.

      Speaking at a separate event in New York on Monday, leading climate scientist Johan Rockström highlighted those findings on the role of global warming in the Himalayan disaster.

      “This will be potentially the first poster-child case of a loss and damage invoice, because here we have a proven case of a catastrophe which would not have occurred if it hadn’t been for human-caused climate change,” he said.

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