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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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Maryland Passes Energy Bill That Delivers Short-Term Relief, Locks Ratepayers into Long-Term Nuclear Subsidy

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Advocates say Maryland lawmakers passed consequential energy proposals without adequate analysis or public debate during the 2026 session.

Maryland lawmakers’ new solution for rising utility bills reduces a surcharge funding an effective energy-efficiency program, offers rebates by raiding the state’s clean energy fund and includes subsidies for nuclear power that advocates say may prove costly over time.

Maryland Passes Energy Bill That Delivers Short-Term Relief, Locks Ratepayers into Long-Term Nuclear Subsidy

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To avoid COP mistakes, Santa Marta conference must be shielded from fossil fuel influence

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Rachel Rose Jackson is a climate researcher and international policy expert whose work involves monitoring polluter interference at the UNFCCC and advancing pathways to protect against it.

Next week, dozens of governments will gather in the Colombian city of Santa Marta for a conference on transitioning away from fossil fuels.

The conference is a first of its kind, in name and in practice. It’s a welcome change to see a platform for global climate action actually acknowledge the primary cause of the climate crisis – fossil fuels. This sends a clear message about what needs to be done to avoid tumbling off the climate cliff edge we are precariously balancing on.

The agenda set for governments to hash out goes further than any other multilateral space has managed to date. Over the week, participants will discuss how to overcome the economic dependence on fossil fuels, transform supply and demand, and advance international cooperation to transition away from fossil fuels.

Alongside the conference, academics, civil society, movements and others are convening to put forward their visions of a just and forever fossil fuel phase out. The conference can help shape pathways and tools governments can use to achieve a fossil-fuel-free future, particularly if the dialogue begins with an honest assessment of “fair shares.”

    This means assessing who is most responsible for emissions and exploring truer means of international collaboration that can unlock the technology, resources and finances necessary for a just transition.

    Fossil fuel-driven violence is spiraling in places like Palestine, Iran, and Venezuela. Climate disasters are causing billions and billions of dollars in damage annually with no climate reparations in sight. All of this remains recklessly unaddressed on account of corporate-funded fascism.

    We know the world’s addiction to fossil fuels must end. Is it surprising that a global governmental convening chooses now to try to tackle fossil fuels? It shouldn’t be, but it is.

    COP failures

    By contrast, meetings of governments signed up to the longest-standing multilateral forum for climate action—the United Nations Framework Convention on Climate Change (UNFCCC) – took nearly three decades before it officially responded to the power built by movements and acknowledged the need to address fossil fuel use at COP28 in 2023.

    Even then, this recognition came riddled with loopholes. It may seem illogical that a forum established by governments in 1992 to coordinate a response to climate change should take decades to acknowledge the root of the problem. Yet there are clear reasons why arenas like the UNFCCC have consistently failed to curb fossil fuels decade after decade.

    What would the outcome be when a fossil fuel executive literally oversaw COP28 and when Coca-Cola was one of the sponsors for COP27?

    How can strong action take hold when, year after year, the UNFCCC’s COPs are inundated with thousands of fossil fuel lobbyists?

    And how can justice be achieved when there are zero safeguards in place to protect against the conflicts of interest these polluters have?

    Colombia pledges to exit investment protection system after fossil fuel lawsuits

    Justly transitioning off fossil fuels cannot be charted when the very actors that have knowingly caused the climate crisis are at the helm—the same actors that consistently spend billions to spread denial and delay.

    Unless platforms like the UNFCCC take concerted action to protect climate policymaking from the profit-at-all-costs agenda of polluters, the world will not deliver the climate action people and the planet deserve.

    The impacts of climate action failure are now endured on a daily basis in some way by each of us – and especially by frontline communities, Indigenous Peoples, youth, women, and communities in the Global South. We must be closing gaps and unlocking pathways for advancing the strongest, fairest and fastest action possible.

    Learn from mistakes

    Yet, as we chase a fossil-fuel-free horizon, it’s essential that we learn from the mistakes of the past. We do not have the luxury or time to repeat them. History shows us we must protect against the polluting interests that want the world addicted to fossil fuels for as long as humanly possible.

    We must also reject their schemes that undermine a just transition—dangerous distractions like carbon markets and Carbon Capture Utilisation and Storage (CCUS) that are highly risky and spur vast harm, all while allowing for polluters to continue polluting.

    Fossil Free Zones can be on-ramps to the clean energy transition

    We get to a fossil-fuel-free future by following the leadership of the movements, communities and independent experts who hold the knowledge and lived experience to guide us there.

    We succeed by protecting against those who have a track record of prioritising greed over the sacredness of life.

    And we arrive at a world liberated from fossil fuels by doing all of these things from day one, before the toxicity of the fossil fuel industry’s poison takes hold.

    If this gathering in Santa Marta can do this, then it can help set a new precedent for what people-centered and planet-saving climate action looks like. When everything hangs in the balance, there can be no if’s, and’s, or but’s. There’s only here and now, what history shows us must be done, and what we know is lost if we do not.

    The post To avoid COP mistakes, Santa Marta conference must be shielded from fossil fuel influence appeared first on Climate Home News.

    To avoid COP mistakes, Santa Marta conference must be shielded from fossil fuel influence

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    Q&A: How the UK government aims to ‘break link between gas and electricity prices’

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    The UK government has announced a series of measures to “double down on clean power” in response to the energy crisis sparked by the Iran war.

    The conflict has caused a spike in fossil-fuel prices – and the high cost of gas is already causing electricity prices to increase, particularly in countries such as the UK.

    In response, alongside plans to speed the expansion of renewables and electric vehicles, the UK government says it will “move…to break [the] link between gas and electricity prices”.

    Ahead of the announcement, there had been speculation that this could mean a radical change to the way the UK electricity market operates, such as moving gas plants into a strategic reserve.

    However, the government is taking a more measured approach with two steps that will weaken – but not completely sever – the link between gas and electricity prices.

    • From 1 July 2026, the government will increase the “electricity generator levy”, a windfall tax on older renewable energy and nuclear plants, using part of the revenue to limit energy bills.
    • The government will encourage older renewable projects to sign fixed-price contracts, which it says will “help protect families and businesses from higher bills when gas prices spike”.

    There has been a cautious response to the plans, with one researcher telling Carbon Brief that it is a “big step in the right direction in policy terms”, but that the impact might be “relatively modest”.

    Another says that, while the headlines around the government plans “suggest a decisive shift” in terms of “breaking the link” between gas and power, “the reality is more incremental”.

    Why are electricity prices linked to gas?

    The price of electricity is usually set by the price of gas-fired power plants in the UK, Italy and many other European markets.

    This is due to the “marginal pricing” system used in most electricity markets globally.

    (For more details of what “marginal pricing” means and how it works, see the recent Carbon Brief explainer on why gas usually sets the price of electricity and what the alternatives are.)

    As a result, whenever there is a spike in the cost of gas, electricity prices go up too.

    This has been illustrated twice in recent years: during the global energy crisis after Russia invaded Ukraine in 2022; and since the US and Israel attacked Iran in February 2026.

    Notably, however, the expansion of clean energy is already weakening the link between gas and electricity, a trend that will strengthen as more renewables and nuclear plants are built.

    The figure below shows that recent UK wholesale electricity prices have been lower than those in Italy, as a result of the expansion of renewable sources.

    The contrast with prices in Spain is even larger, where thinktank Ember says “strong solar and wind growth [has] reduced the influence of expensive coal and gas power”.

    Chart showing that renewables are 'decoupling' power prices from gas in some countries
    Wholesale electricity prices in the UK, Spain and Italy, € per megawatt hour. Source: Ember.

    The share of hours where gas sets the price of power on the island of Great Britain (namely, England, Scotland and Wales) has fallen from more than 90% in 2021 to around 60% today, according to the Department of Energy Security and Net Zero (DESNZ). (Northern Ireland is part of the separate grid on the island of Ireland.)

    This is largely because an increasing share of generation is coming from renewables with “contracts for difference” (CfDs), which offer a fixed price for each unit of electricity.

    CfD projects are paid this fixed price for the electricity they generate, regardless of the wholesale price of power. As such, they dilute the impact of gas on consumer bills.

    The rise of CfD projects means that the weeks since the Iran war broke out have coincided with the first-ever extended periods without gas-fired power stations in the wholesale market.

    This shows how, in the longer term, the shift to clean energy backed by fixed-price CfDs will almost completely sever the link between gas and electricity prices.

    The National Energy System Operator (NESO) estimated that the government’s target for clean power by 2030 could see the share of hours with prices set by gas falling to just 15%.

    What is the government proposing?

    For now, however, about one-third of UK electricity generation comes from renewable projects with an older type of contract under the “renewables obligation” scheme (RO).

    It is these projects that the new government proposals are targeting.

    The government hopes to move some of these projects onto fixed-price contracts, which would no longer be tied to gas prices, further weakening the link between gas and electricity prices overall.

    When RO projects generate electricity, they earn the wholesale price, which is usually set by gas power. In addition, they are paid a fixed subsidy via “renewable obligation certificates” (ROCs).

    This means that the cost of a significant proportion of renewable electricity is linked to gas prices. Moreover, it means that, when gas prices are high, these projects earn windfall profits.

    In recognition of this, the Conservative government introduced the “electricity generator levy” (EGL) in 2022. Under the EGL, certain generators pay a 45% tax on earnings above a benchmark price, which rises with inflation and currently sits at £82 per megawatt hour (MWh).

    The tax applies to renewables obligation projects and to old nuclear plants.

    The current government will now increase the rate of the windfall tax to 55% from 1 July 2026, as well as extending the levy beyond its previously planned end date in 2028.

    It says it will use some of the additional revenue to “support businesses and households with the impacts of the conflict in the Middle East on the cost of living”. Chancellor Rachel Reeves said:

    “This ensures that a larger proportion of any exceptional revenues from high gas prices are passed back to government, providing a vital revenue stream so that money is available for government to support businesses and families with the impacts of the conflict in the Middle East.”

    The increase in the windfall tax may also help to achieve the government’s second aim, which is to persuade older renewable projects to accept new fixed-price contracts.

    Simon Evans on Bluesky: Details of UK govt plans to break influence of gas on electricity prices

    Reeves made this aim explicit in her comments to MPs, saying the higher levy “will encourage older, low-carbon electricity generators, which supply about a third of our power, to move from market pricing to fixed-price contracts for difference”.

    (This is an adaptation of a proposal for “pot zero” fixed-price contracts, made by the UK Energy Research Centre (UKERC) in 2022, see below for more details.)

    As with traditional CfDs, the new fixed-price contracts would not be tied to the price of gas power. Instead of earning money on the wholesale electricity market, these generators would take a fixed-price “wholesale CfD”. In addition, they would be exempted from the windfall tax and would continue to receive their fixed subsidy via ROCs.

    The government says this will be voluntary. It will offer further details “in due course” and will then consult on the plans “later this year”, with a view to running an auction for such contracts next year.

    It adds: “Government will only offer contracts to electricity generators where it represents clear value for money for consumers.”

    Leo Hickman on Bluesky: UK energy secretary Ed Miliband appearing on BBC Breakfast

    (It is currently unclear if the proposals for new fixed-price contracts would also apply to older nuclear plants. Last month, the government said it intended to “enable existing nuclear generating stations to become eligible for CfD support for lifetime-extension activities”.)

    What is not being proposed?

    Contrary to speculation ahead of today’s announcement, the government is not taking forward any of the more radical ideas for breaking the link between gas and electricity prices.

    Many of these ideas had already been considered in detail – and rejected – during the government’s “review of electricity market arrangements” (REMA) process.

    This includes the idea of creating two separate markets, one “green power pool” for renewables and another for conventional sources of electricity.

    It also includes the idea of operating the market under “pay as bid” pricing. This has been promoted as a way to ensure that each power plant is only paid the amount that it bid to supply electricity, rather than the higher price of the “marginal” unit, which is usually gas.

    However, “pay as bid” would have been expected to change bidding behaviour rather than cutting bills, with generators guessing what the marginal unit would have been and bidding at that level.

    Finally, the government has also not taken forward the idea of putting gas-fired power stations in a strategic reserve that sits outside the electricity market.

    Last year, this had been proposed jointly by consultancy Stonehaven and NGO Greenpeace. In March, they shared updated figures with Carbon Brief showing that – according to their analysis – this could have cut bills by a total of around £6bn per year, or about £80 per household.

    However, some analysts argued that it would have distorted the electricity market, removing incentives to build batteries and for consumers to use power more flexibly.

    What will the impact be?

    The government’s plan for voluntary fixed-price contracts has received a cautious response.

    UKERC had put forward a similar proposal in 2022, under which older nuclear and renewable projects would have received a fixed-price “pot zero” CfD.

    (This name refers to the fact that CfDs are given to new onshore wind and solar under “pot one”, with technologies such as offshore wind bidding into a separate “pot two”.)

    In April 2026, UKERC published updated analysis suggesting that its “pot zero” reforms could have saved consumers as much as £10bn a year – roughly £120 per household.

    Callum McIver, research fellow at the University of Strathclyde and a member of the UKERC, tells Carbon Brief that the government proposals are a “big step in the right direction in policy terms”.

    However, he says the “bill impact potential is lower” than UKERC’s “pot zero” idea, because it would leave renewables obligation projects still earning their top-up subsidy via ROCs.

    As such, McIver tells Carbon Brief that, in his view, the near-term impact “could be relatively modest”. Still, he says that the idea could “insulate electricity prices” from gas:

    “The measures are very welcome and, with good take-up, they have the potential to insulate electricity prices further from the impact of continued or future gas price shocks, which should be regarded as a win in its own right.”

    In a statement, UKERC said the government plan “stops short of the full pot-zero proposal, since it will leave the RO subsidy in place”. It adds:

    “This makes the potential savings smaller, but it will break the link with gas prices. The devil will be in the detail, but provided the majority of generators join the scheme, most of the UK’s power generation fleet will have a price that is not related to the global price of gas.”

    Marc Hedin, head of research for Western Europe and Africa at consultancy Aurora Energy Research, tells Carbon Brief that, while the headlines “suggest a decisive shift” in terms of “breaking the link” between gas and power, “the reality is more incremental”. He adds:

    “In principle, moving a larger share of generation onto fixed prices would reduce consumers’ exposure to gas‑driven price spikes and aligns well with the direction already taken for new build [generators receiving a CfD].”

    However, he cautioned that “poorly calibrated [fixed] prices would transfer value to generators at consumers’ expense, while overly aggressive pricing could result in low participation”.

    In an emailed statement, Sam Hollister, head of UK market strategy for consultancy LCP, says that the principle of the government’s approach is to “bring stability to the wholesale market and avoid some of the disruption that a more radical break might have caused”.

    However, he adds that the reforms will not “fundamentally reduce residential energy bills today”.

    Johnny Gowdy, a director of thinktank Regen, writes in a response to the plans that while both the increased windfall tax and the fixed-price contracts “have merit and could save consumers money”, there were also “pitfalls and risks” that the government will need to consider.

    These include that a higher windfall tax could “spook investors”. He writes:

    “A challenge for policymakers is that, while the EGL carries an investment risk downside, unless there is a very significant increase in wholesale prices, the tax revenue made by the current EGL could be quite modest.”

    Gowdy says that the proposed fixed-price contracts for older renewables “is not a new idea, but its time may have come”. He writes:

    “It would offer a practical way to hedge consumers and generators against volatile wholesale prices. The key challenge, however, is to come up with a strike price that is fair for consumers and does not lock future consumers into higher prices, given that we expect wholesale prices to fall over the coming decade.”

    Gowdy adds that it might be possible to use the scheme as a way to support “repowering”, where old windfarms replace ageing equipment with new turbines.

    On LinkedIn, Adam Bell, partner at Stonehaven and former head of government energy policy, welcomes the principle of the government’s approach, saying: “The right response to yet another fossil fuel crisis is to make our economy less dependent on fossil fuels.”
    However, he adds on Bluesky that the proposals were “unlikely to reduce consumer bills”. He says this is because they offered a weak incentive for generators to accept fixed-price contracts.

    The post Q&A: How the UK government aims to ‘break link between gas and electricity prices’ appeared first on Carbon Brief.

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