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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

Broken records

FIRES: Wildfires have burned through more than 1m hectares of land across the EU, making 2025 the worst year on record, the Guardian reported. Blazes in the EU have burned four times as much land this year as the average over the past two decades, according to data from the European Forest Fire Information System, the outlet said. Meanwhile, the UK has “almost certainly” faced its hottest summer on record, according to provisional Met Office data covered by BBC News.

FLOODS: At least 34 people have been killed as heavy rainfall across India and Pakistan continued to cause flash floods and landslides in Indian-controlled Kashmir, the Associated Press reported. Continuing extreme rainfall in China has caused more than $2bn in damages since July, noted Reuters. Typhoon Kajiki has killed at least eight people in Vietnam and Thailand, with more flash floods and mudslides expected, Channel News Asia reported.

Turbine turbulence

POWER SHOCK: Shares in the Danish wind-power developer Ørsted dropped to a record low after the Trump administration ordered the firm to stop work on a near-complete project, the Financial Times reported. The $1.5bn Revolution Wind project is four-fifths complete and was due to power 350,000 homes in Rhode Island and Connecticut, the newspaper said.

‘WINDFARM WASTE’: In the UK, the energy regulator Ofgem announced that energy bills will rise by 2% for millions of households in October, with the Times reporting that part of the increase is due to the rising cost of “paying wind farms to switch themselves off”. The news sparked a wave of critical editorials and comment pieces in right-leaning and climate-sceptic UK newspapers. A Carbon Brief factcheck previously explained how gas prices, rather than “balancing costs” associated with wind farms, are the largest driver of high electricity prices in the UK.

Around the world

  • FORESTS FOREVER: At a summit in Colombia, Brazil won the backing of other Amazon nations for its $125bn “Tropical Forests Forever Facility”, a fund first launched at COP28 in 2023, Bloomberg reported.
  • CHINA CAP: China’s cabinet announced that the country will “tighten its carbon trading market by introducing absolute emissions caps in some industries for the first time starting by 2027”, Reuters said.
  • RECORD RENEWABLES: Global renewables investment increased by 10% in the first half of the year, when compared to last year, to a record $386bn, according to new data from BloombergNEF covered by BusinessGreen.
  • BANKING BREAK: The Net-Zero Banking Alliance has “paused” its activities “after losing top European and Wall Street members amid Trump’s ongoing crusade against climate change”, reported the Financial Times.
  • STAFF SUSPENDED: The US Federal Emergency Management Agency (Fema) has suspended more than 20 members of staff who signed an open letter warning that Trump’s cuts to the body could risk a “national catastrophe” on the scale of Hurricane Katrina, according to BBC News.

87%

The percentage of new coal-power capacity located in China or India that came online globally in the first half of 2025, as revealed in a guest post for Carbon Brief written by Global Energy Monitor researchers.


Latest climate research

  • Exposure to heatwaves may cause people to age faster | Nature Climate Change
  • The number of supercell thunderstorms – the “most hazardous thunderstorm category” – could increase by an average of 11% in Europe under 3C of global warming | Science Advances
  • Sea level rise projections from the Intergovernmental Panel on Climate Change (IPCC) second assessment in 1995 were “strikingly close to what transpired over the next 30 years” | Earth’s Future

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

Captured

A chart showing that far more space is taken up by golf courses than solar power in many countries

Carbon Brief published an in-depth factcheck debunking 16 of the most commonly heard false and misleading myths about solar power. One such claim is that solar power poses “a serious threat to agriculture and food security” by taking up land. The chart above, adapted from the factcheck, puts such a claim in perspective using the land-use of golf courses as a comparison.

Spotlight

How to reform the UN’s climate COPs

This week, Carbon Brief highlights a short extract from a new autobiography written by the late Peter Betts, who was the UK and EU lead negotiator at various COPs, including 2015’s pivotal COP21 in Paris. Betts, who died of brain cancer in October 2023, used his book to lay out his views on how to reform COPs – a topic Carbon Brief recently asked a range of experts about, too.

Of course, the UNFCCC and COP process has its shortcomings. For example, I would be the first to acknowledge that progress on finance, adaptation and loss and damage has been too slow. But I would argue that it would not have happened at all without the central global discussion afforded by the COPs, at which vulnerable countries always have a strong voice.

The alternative to COPs – often put forward by big and powerful countries – is to do everything within the G20, perhaps complemented by plurilateral cooperation between big states. No one would be more pleased to see the end of the COP process than big oil and gas interests in the US who sought to undermine COPs throughout my decade or more in negotiations.

My experience was that excluding the vulnerable countries led to lower-ambition outcomes which the US and emerging economies were comfortable with. The vast bulk of vulnerable countries would be horrified to lose the COPs, since it guarantees them a voice.

Overall, then, I believe that the case for keeping a global forum, where all have a seat at the table and, therefore, the most vulnerable have a voice, is overwhelming, and this is the UNFCCC. It is an indispensable political moment every year to rally the forces of ambition for climate change (and, to paraphrase Voltaire, if we didn’t have it, we would need to invent it). There are, however, two improvements that could be made to the way COPs operate.

1: The second stocktake

Formal stocktakes occur every five years, at a point two years before the next five-yearly ambition cycles of the COPs (such as Paris and Glasgow). But there is almost no focus by the media or NGOs on the announcements of NDCs [nationally determined contributions], especially those of “developing countries”, despite the importance of NDCs’ impact on climate goals.

In the run-up to the five-yearly stocktakes there should be a moment, perhaps a third of the way through the year, where we can see where we stand, individually and collectively, following the NDCs that have been announced. If some countries’ proposals are weak, those countries should be pressured to do more; if some have not submitted a proposal at all, then that should be highlighted.

It seems unlikely that the big economies would agree a formal process change, as when I have suggested such a second stocktake “moment” to various partners they have expressed concerns that it would be controversial. However, civil society should look to create this moment outside the formal process with analysis and media-friendly events which would provide an opportunity to assess (and put pressure on) relative, proposed contributions.

Peter Betts at Windsor Castle in 2021.
Peter Betts at Windsor Castle in 2021. Credit: PA Images / Alamy Stock Photo

2: Annex membership

Second, we should review membership of the annexes to the convention, which set out who is “developed” and who is a “developing” country. We need a step change in support for emerging economies to help them make the transition to low carbon, which is increasingly affordable and will bring them other benefits. This means much more finance from Annex II countries, complemented by finance from China (the world’s biggest sovereign investor) and from Gulf states, who have grown rich on selling fossil fuels.

Sadly, however, I doubt whether it will be possible to negotiate changes to membership of the annexes, even though that was required by the convention to happen by 1998. But could countries such as China and the Gulf states not voluntarily step into Annex I and/or even Annex II?

Non-Annex I countries now constitute nearly two-thirds of global emissions and are likely to be a far higher proportion of emissions growth. So, if we want to limit climate change, it is these emissions we need above all to target. Of course, we must complement this by quicker action by Annex I countries, perhaps alongside negative emissions, and we must provide much more serious help to some non-Annex I countries.

Adapted from The Climate Diplomat: A Personal History of the COP Conferences by Peter Betts, published by Profile on 28 August and available now.

Watch, read, listen

KATRINA: Twenty years on from the category-five hurricane that devastated New Orleans, the Times had a lengthy feature about the “flood, failures and chilling aftermath”. Netflix also released a three-part series about the disaster.

SLOP: DeSmog investigated the websites using AI-generated content citing non-existent climate experts and institutions.

FAILED MODEL: Pakistani journalist Arifa Noor lamented in Dawn the “development model” being adopted by the nation’s “ruling elite” amid the “rage of climate change”.

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 29 August 2025: Record wildfires; Solar myths factchecked; Climate veteran on COP reform appeared first on Carbon Brief.

DeBriefed 29 August 2025: Record wildfires; Solar myths factchecked; Climate veteran on COP reform

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UN chief warns climate crisis “in overdrive” as El Niño threatens to fuel the fire

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The United Nations Secretary-General and foreign ministers from the UK, France and Spain have blamed the deadly wildfires engulfing Europe on climate change, using the disaster to renew calls for faster cuts to greenhouse gas emissions.

António Guterres told journalists on Friday that the “climate crisis is in overdrive”, adding that global heat seen so far is just a “warm up act” as a phenomenon known as El Niño intensifies “adding fuel to a planet already on fire”.

A new World Meteorological Organisation (WMO) report published on Friday predicts that the weather pattern will grow into a “strong event” between now and October, increasing the risk of higher than normal temperatures across much of the world and disrupted rainfalls.

“That risks shattering every seasonal record – and driving even more severe effects worldwide,” Guterres said.

El Niño builds on top of an already warming world, driven primarily by the burning of fossil fuels. A WMO scientist, who did not want to be named, told journalists that all the heatwaves and other climate impacts seen so far this year are “before the effects of El Niño are really kicking in at a global scale”.

Fossil fuellling the fires

Fires have broken out across much of Europe but are threatening the most people in the south-west of France near Bordeaux and in Central Spain near Madrid. Nearly a quarter of a million people have been evacuated in France with hundreds of homes destroyed while in Spain 80,000 people have had to leave their homes and at least 13 died in one village.

A scientific study published on Friday by the World Weather Attribution group found that man-made climate change made deadly fires in France twice as likely and those in Spain twenty times more likely. Smaller fires in the UK were not analysed by the study.

UN Climate Change leader Simon Stiell blamed fossil fuels for the fires, as well as storms in Chile and heatwaves in North America and Japan in recent weeks. “The climate alarm is blaring”, he said on Wednesday.

Guterres criticised new fossil fuel production projects and fossil fuel subsidies for causing hardship across the world. Discussing his speech, a senior UN official – who did not want to be named – said the subsidies amounted to trillions of US dollars a year and criticised pension funds and institutional investors, including insurance companies, for continuing to invest in fossil fuel projects.

The head of the United Nations Antonio Guterres (right) with the head of the UN’s climate arm Simon Stiell (left) at COP30 (Photo: Kiara Worth/UNFCCC)

Asked why world leaders and the public are not prioritising climate action, Guterres said they are distracted by wars in Ukraine, the Middle East, Sudan and elsewhere and sometimes forget “other aspects that are a sometimes even more dangerous threat”.

Also the fossil fuel industry and “some countries” are campaigning to pretend that climate change does not exist, he said, adding that the UN should be more active in “naming the situations as they are and the responsibilties as they are and mobilising the public opinion”.

After meetings in Paris and Madrid earlier in the week, the UK’s new foreign minister Ed Miliband issued joint statements with his French and Spanish counterparts – Jean-Noël Barrot and José Manuel Albares Bueno – calling on the world to reduce its dependence on fossil fuels.

They promised to do more to reduce emissions and protect their people and encouraged other governments to do the same.

The UK-French statement called on governments to publish UN climate plans, known as nationally determined contributions (NDCs), which are aligned with the Paris Agreement’s goal to limit global average temperatures to 1.5C above pre-industrial levels.

According to Climate Action Tracker, only three countries – the UK, Nigeria and Norway – have submitted NDCs with 2035 emissions reduction targets which are compatible with 1.5C. Fifty-two countries – including Egypt, Vietnam and Argentina – have yet to submit an NDC at all.

Defending science

Beyond action on emissions, the ministers also intervened in an ongoing dispute over the timing of the Intergovernmental Panel on Climate Change’s (IPCC)’s next flagship assessment.

Miliband and Barrot’s statement said they “underline the importance” of scientific report feeding into governments’ next global stocktake of progress on climate action in two years’ time, calling it a “critical input” to that process.

The timing of this report has been a contentious issue in government negotiations at the IPCC and at June’s climate talks in Bonn. While a group of nations calling themselves the “friends of science” want the report before the stocktake, others like Saudi Arabia and India have argued that this would make the report of a worse quality and less inclusive of developing countries’ scientists.

Science ‘under attack’ from fossil fuel interests at UN climate talks

The UK-Spanish statement weighed in less explicitly on this issue but said that they “recall the importance of scientific evidence and acknowledge the work of the IPCC in this respect.”

The British and French ministers said they would seek to accelerate reductions of emissions in methane, a particularly potent greenhouse gas, at COP31 in November. They encouraged governments “to work jointly to develop a marketplace for fossil fuels with near-zero methane intensity.”

Methane leaks from oil, gas and coal production are a major contributor to global warming. Over a 20-year period, methane traps around 80 times more heat than carbon dioxide.

Ed Miliband meets José Manuel Albares Bueno in Madrid on 29 July 2026. (Picture by Ed Morris / FCDO)

The UK and Spanish statement emphasised the importance of supporting the Global South and underlined the need to mobilise sustainable financing “at scale with the challenge we face”. The previous UK government, in which Miliband was energy minister, cut climate finance to developing countries to pay for increases in military spending.

The UK government led by new Prime Minister Andy Burnham has yet to outline any major changes to climate finance in its two weeks in power but has announced it will convert some finance from grants to loans in order to free up money to subsidise bus travel in England.

More adaptation needed

Guterres said that “it is time to stop treating each disaster as an isolated tragedy and recognise the systemic risk that is unfolding before our eyes.” A recent study found that three-quarters of UK media reports about the British June heatwave did not mention climate change.

As well as reducing emissions, the UN Secretary-General called for measures to adapt vulnerable people to extreme heat. Specifically, he said that buildings should be built and retrofitted for extreme heat and that every city and country should have heat-health action plans and early warning systems. Over 250 cities have joined the UN’s ‘beat the heat’ initiative, he said.

The Portuguese diplomat called for governments and employers to do more to protect their workers from heat, criticising global fashion brands for not setting heat standards for the factories that supply them. “No one should have to risk their life to earn a living,” he said.

The post UN chief warns climate crisis “in overdrive” as El Niño threatens to fuel the fire appeared first on Climate Home News.

UN chief warns climate crisis “in overdrive” as El Niño threatens to fuel the fire

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‘Ride the wave of momentum’: Australia announces once-in-a-decade Marine Parks Network review

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In response to the federal government announcing its once-in-a-decade review of Australia’s Marine Parks Network, the following lines can be attributed to Elle Lawless, Senior Campaigner at Greenpeace Australia Pacific:

“Greenpeace Australia Pacific welcomes today’s announcement that the Albanese Government will review Australia’s Commonwealth Marine Parks Network. This is a rare, once-in-a-decade opportunity to strengthen our marine parks and ban industrial fishing in Australia’s marine protected areas.

“Australians would be appalled to know that more than half of Australia’s Marine Parks Network currently allows for extractive industries, like longlining, bottom trawling and oil and gas mining. These so-called ‘protected’ areas were designed to safeguard our beloved ocean wildlife and underwater ecosystems – that is what Australians expect. Damaging industrial industries should not be given a free pass to trawl, fish, drill or extract from our marine parks.”

“With the first Ocean COP just around the corner, and off the back of Australia’s move to ratify the Global Ocean Treaty earlier this year, the Australian government has a unique opportunity to ride the wave of this momentum and solidify itself as a true global ocean leader.

“Greenpeace Australia Pacific is calling for industrial activities to be banned from our protected waters and for at least 30% of Australia’s ocean to be protected as ocean sanctuaries. This review presents a rare opportunity to create more ocean sanctuaries, true blue havens where ocean life can recover, thrive and repopulate the surrounding waters.”

—ENDS—

‘Ride the wave of momentum’: Australia announces once-in-a-decade Marine Parks Network review

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Factcheck: No, Europe is not having its ‘quietest’ year for wildfires

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In recent days, prominent climate sceptics and rightwing commentators have shared charts on social media incorrectly implying that Europe is having its “quietest” year for wildfires in 2026.

These include Dr Matthew Wielicki, a former University of Alabama geochemist and self-described “professor in exile”, who was recently appointed by the Trump administration to lead the US Global Change Research Program.

However, these charts paint a misleading picture as they are skewed by encompassing the entirety of Russia in the data – including the vast plains of Siberia.

These charts also use data that include fires that are deliberately lit to manage cropland, which is a declining practice across much of Europe.

In this factcheck, Carbon Brief shows that the area burned by wildfires across the European Union in 2026 is second only to 2022 for this time of year.

The latest data from the European Forest Fire Information System (EFFIS) also shows that France has set a new modern record for area burned and Spain’s wildfire season is among the worst on record.

The fires have displaced more than a third of a million people across south-western Europe, while an impending heatwave has also raised fears of the fires worsening in the coming days.

‘Quietest year’

On 27 July, as wildfires raged across multiple European countries, former Conservative peer and climate-sceptic commentator Matt Ridley posted on Twitter that “2026 is the quietest year for wildfires in Europe by some distance”.

Misleading social media post by Mitt Ridley that says" er...2026 is the quietest year for wild fires un Europe by some distance."

Ridley, who sits on the academic advisory council of the Global Warming Policy Foundation (GWPF), a UK-based climate-sceptic lobby group that refuses to reveal the sources of its funding, was responding to an article by Daily Telegraph columnist Tim Stanley.

Stanley’s column, headlined: “Climate change is real – and the right needs to get serious about it”, warned:

“This is no longer a matter of speculation: the wildfires of Europe, pitiless and persistent, are the way we live now.”

Ridley included a chart from Our World In Data, showing the cumulative area burned by wildfires by week for Europe. The chart puts 2026 as having the smallest area for this time of year in a dataset going back to 2012.

Ridley’s post was widely shared by prominent rightwing figures – including Richard Tice, deputy leader of the hard-right, climate-sceptic Reform UK party, former Conservative cabinet minister Jacob Rees-Mogg and multiple commentators.

Separately, Wielicki also shared a chart on Twitter to imply that wildfires in Europe are declining. Wielicki has previously claimed that the “science is not settled on climate change”.

The charts posted by Ridley and Wielicki both use data from the Global Wildfire Information System (GWIS). The GWIS category for “Europe” encompasses all the countries on the continent and includes the whole of Russia.

As a result, Russia accounts for about 74% of the area included in the GWIS definition of “Europe”.

Wildfires in Russia typically account for 80-90% of the burned area in the GWIS Europe dataset. In 2026, fires in Russia are substantially below average. Therefore, including Russia in this comparison creates the false impression that wildfire activity across Europe is unusually low.

Dr Calum Cunningham, a research fellow at the University of Tasmania’s Fire Centre, says that such claims are “highly misleading”, noting that “they rely on aggregating fire activity across an enormous and climatically diverse region”. He tells Carbon Brief:

“A relatively quiet season in Russia can easily mask an exceptionally active season in France or Spain. If the analysis is focused on the regions actually experiencing the current fires, the picture is very different.

“The reality is that western Europe has experienced an extraordinary sequence of climate conditions this year.”

In contrast, the EFFIS provides a subset of wildfire data specifically for the area covered by the 27 nations of the EU, which, therefore, excludes Russia.

Another difference between the two datasets is that GWIS monitors all fires – including those on agricultural land that are intentionally set alight. The burned area as measured by GWIS contains significant cropland area.

By contrast, EFFIS uses land-cover data and other information to filter specifically for forest fires.

Looking at the EU-only data from EFFIS reveals that Europe is far from having its “quietest” year. The bloc’s burned area, as of 29 July, is almost 435,000 hectares (ha) – second only to 2022 for this time of year.

The area burned by wildfires in the EU in 2026 by end of July is second only to 2022. Weekly cumulative burned area (hectares). Line graph shows 2026 burned area reaching over 400,000 hectares by late July, far exceeding the 2006-2025 average. Source: EFFIS - (alt text generated by Google Gemini)

Notably, Wielicki has actually continued to post charts based on GWIS data, even after acknowledging that “includ[ing] all of Russia, including vast areas of Siberia…isn’t a good proxy for Europe”.

French fires

Even looking at EU-wide data misses the scale of this year’s wildfires for some individual countries.

The chart below shows the surge in burned area in France since mid-July.

For much of the first half of the year, the country was having a wildfire season that was only slightly above average in terms of total burned area. However, a notable uptick began in the first week of July.

The third week of the month saw France break its previous cumulative annual record by more than 19,000ha. That gap has widened as the fires continue to burn; as of 29 July, the cumulative burned area in France during 2026 was nearly 24,700ha above the previous record.

France's wildfires in 2026 are the most widespread in modern records. Weekly cumulative burned area (hectares). A line chart shows 2026 burned area sharply rising by August to over 90,000 hectares, well above the 2006-2025 range maximum of around 65,000 and average of 15,000. Source: EFFIS - (alt text generated by Google Gemini)

The fires in France follow a record-breaking June heatwave that “dried out vegetation across the region, allowing fires to spread quickly”, wrote the New York Times.

On 27 July, French president Emmanuel Macron called a “crisis cabinet meeting” in order to address the fires “ravaging several areas of south-west France”, said France 24.

More than 220,000 people have been evacuated due to the Gironde fire, west of Bordeaux, in “what may be France’s largest peacetime evacuation”, reported the Associated Press.

In the Conversation, Cunningham and two other University of Tasmania researchers write that evacuation orders “protec[t] human lives, but makes it more likely houses and other structures will burn if there’s no one to defend them”. They add:

“There is little doubt climate change has made France and Spain’s wildfires worse. They represent yet another reason to redouble our efforts to tackle climate change and stabilise our climate.”

Central Spain scorched

While Spain’s fire season has not broken records in the same way that France’s has, it is on track to be among the worst since EFFIS began reporting data in 2006.

The chart below shows the rapid increase in burned area in Spain since 8 July. The latest data from EFFIS reveal that, as of 29 July, Spain has almost matched its previous record at this point in the year. It is also nearly five times the average area burned for this time of year.

Line chart titled "Spain's 2026 wildfires are among the worst in modern records", subtitle "Weekly cumulative burned area (hectares)". By August, 2026 burned area surges past 200,000 hectares, rising far above the 2006-2025 average and near the upper historical range. Source: EFFIS - (alt text generated by Google Gemini)

In Spain, the wildfires have been concentrated in the central part of the country, near Madrid.

BBC News reported that the fires outside the capital have burned “an area more than twice as large as the city itself”.

Nearly 90,000 people were forced from their homes in central Spain by the fires, said the Associated Press.

Pedro Sánchez, Spain’s prime minister, called the fires a “painful expression” of climate change.

Meanwhile, the UK, French and Spanish governments have issued joint statements this week in response to the fires. The UK/Spain statement begins:

“This summer’s wildfires demonstrated that climate change was now a national security emergency facing Europe and threatening our way of life.”

The post Factcheck: No, Europe is not having its ‘quietest’ year for wildfires appeared first on Carbon Brief.

Factcheck: No, Europe is not having its ‘quietest’ year for wildfires

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