The year 2023 saw the coronation at Westminster Abbey of a new king, the mugshot of a former US president and the rebranding of a social media platform to a single letter.
But behind the biggest stories of the year, thousands of studies detailing new research also made the headlines. And climate change and energy were among the topics that received the most attention.
Each year, Altmetric tracks how often research papers from academic journals are mentioned in online news articles as well as on blogs and social media platforms. It then gives each paper a score according to the attention it receives.
Using Altmetric data for 2023, Carbon Brief has compiled its annual list of the 25 most talked-about climate- or energy-related papers that were published the previous year.
(The list focuses on peer-reviewed research papers only – commentaries or other papers that are not formally peer-reviewed are not included.)
The infographic above shows which papers made it into the top 10, while the article includes analysis of the full list of 25, including the diversity of their authors and which journals feature most frequently.
The list covers research into the climate projections of a major oil company, the human cost of global warming and the catastrophic failure of breeding penguins – as well as the curious case of the high-scoring paper that received almost no news coverage at all.
Antarctic ice shelves
The most talked-about journal papers of 2023 are again dominated by research relating to Covid-19, continuing the pattern seen in recent years.
For example, the highest-scoring paper of any published in 2023 is a review into the effectiveness of measures to reduce the spread of respiratory viruses, such as Covid, swine flu and severe acute respiratory syndrome (Sars).
The study’s Altmetric score of 25,730 puts it almost 10,000 points ahead of the second-placed paper, which is also about Covid.
But the top-scoring paper relating to climate is not far behind, landing fourth in the overall list with a score of 13,886.
The study, “Change in Antarctic ice shelf area from 2009 to 2019”, gains the highest score for any climate paper in any of Carbon Brief’s annual reviews by some distance – the previous highest was 7,803 in 2022.
(For Carbon Brief’s previous Altmetric articles, see the links for 2022, 2021, 2020, 2019, 2018, 2017, 2016 and 2015.)
The study, published in the Cryosphere, uses satellite observations to produce a dataset of changes in the “calving front” – that is, where icebergs break off – and area of the ice shelves that surround Antarctica between 2009 and 2019. It shows that, overall, the area of Antarctic ice shelves has grown by around 5,300 square kilometres (km2) since 2009, with 18 ice shelves retreating and 16 larger shelves growing in area.
Specifically, ice-shelf area has decreased on the Antarctic Peninsula (by 6,693km2) and in west Antarctica (by 5,563km2), and increased in east Antarctica (by 3,532km2) and on the large Ross and Ronne-Filchner ice shelves (by 14,028km2), the paper says.
The map from the study below shows the growth (blue) and retreat (red) of ice shelves around Antarctica, where the size of the circles indicates the scale of the change from 2009 to 2019.
While the high scores of climate-related papers in previous years have primarily been driven by news coverage, this paper appears in just seven news stories.
As study author Prof Anna Hogg from the University of Leeds explains to Carbon Brief:
“Somewhat unusually, we didn’t put out a press release for the paper as we assumed the scientific community that needed the dataset would make use of it naturally.”
Instead, the paper’s high Altmetric score is principally a result of a huge number of mentions on Twitter – more than 63,000 posts from around 48,000 accounts. (Altmetric includes weightings in its scoring system, so news articles (with a weighting of eight) are deemed to have more impact than tweets (0.25).)
A closer look suggests that the paper has been widely quoted by the Twitter accounts of a number of prominent climate sceptics in an attempt to push back on concerns around climate change and the loss of Antarctic ice. These posts have then been widely retweeted by other accounts.
To see the paper “being used as evidence to suggest that climate change isn’t happening” was a “real surprise”, says Hogg, because the paper “doesn’t make any such statement”.
Specifically, the gains the study identifies in ice-shelf area in east Antarctica do not detract from the risks of retreating ice shelves on other parts of the continent, says Hogg:
“The decrease in ice shelf area in west Antarctica is particularly important as this ice shelf area actively ‘buttresses’ the flow of ice from the ice sheet behind it, which through ice dynamic processes is one of the reasons why west Antarctica is contributing significantly to present-day sea level rise.”
Indeed, the seventh most-talked about paper in 2023 (see below) is a Nature Climate Change study warning that accelerated melt of west Antarctica’s ice shelves is now locked in, even for the most ambitious emissions reduction scenarios. The authors provide this stark conclusion:
“These results suggest that mitigation of greenhouse gases now has limited power to prevent ocean warming that could lead to the collapse of the west Antarctic ice sheet.”
The misleading way the study has been used by some climate-sceptic social media accounts has been “incredibly challenging”, says Hogg, with the authors unable “to reply to every incorrect tweet” about their work. However, they did find “a fair number” of responses from other accounts “saying that they had read the paper and it didn’t provide evidence against climate change”.
This perhaps shows “open access doing its job”, says Hogg, as the paper was published in an open-access journal and so is freely available for anyone to read. In another high-scoring statistic, the full paper has now been viewed more than 150,000 times on the journal’s website.
ExxonMobil
Landing in second place with an Altmetric score of 8,686 is the review paper, “Assessing ExxonMobil’s global warming projections”. Published in Science, the study analyses the global warming projections documented and modelled by scientists at the oil major ExxonMobil between 1977 and 2003.
(There is a higher-scoring paper, “The 2023 state of the climate report: Entering uncharted territory”, in the journal BioScience, but it is a “special report” and was not formally peer reviewed.)
The results indicate that “in private and academic circles since the late 1970s and early 1980s, ExxonMobil predicted global warming correctly and skillfully”, the paper says, adding:
“ExxonMobil’s average projected warming was 0.20C ±0.04C per decade, which is, within uncertainty, the same as that of independent academic and government projections published between 1970 and 2007.”
The findings reveal that ExxonMobil “knew as much as academic and government scientists knew” about global warming decades ago. But, the paper adds, “whereas those scientists worked to communicate what they knew, ExxonMobil worked to deny it”.
The study was covered by 823 news stories by 555 outlets, including BBC News, the Associated Press, CNN, Vice, CNBC and Inside Climate News. It was also included in 48 blog posts and more than 13,000 tweets. It is the 12th most talked-about paper on any topic in 2023.
Extreme heat
In third place is the Nature Medicine paper, “Heat-related mortality in Europe during the summer of 2022”, with a score of 7,821. The study finds that more than 60,000 deaths in the summer of 2022 – Europe’s hottest season on record – were linked to the heat.
Across 35 countries, the highest numbers of heat-related deaths occurred in Italy (18,010 deaths), Spain (11,324) and Germany (8,173), the study says. It also finds that the “burden of heat-related mortality was higher among women”, with 56% more heat-related deaths in women than men, relative to population.
The study was picked up in 943 news stories from more than 650 outlets – the largest number of any paper in the top 25. It was picked up by outlets across Europe, including Sky News and ITV News in the UK, Agence France-Presse in France and Der Spiegel in Germany. Carbon Brief also covered the article in detail.
The widespread coverage was likely to be in part because Europe was experiencing a heatwave dubbed “Cerberus” when the paper was published in July.
Lead author Dr Joan Ballester Claramunt from the Barcelona Institute for Global Health tells Carbon Brief that the paper also “received so much attention from the media because society is increasingly aware of the health risks of environmental factors, and particularly in a context of rapidly warming temperatures”.
Rest of the top 10
In fourth place is, “Warning of a forthcoming collapse of the Atlantic Meridional Overturning Circulation”, which was published in Nature Communications.
The study uses statistical techniques to detect early warning signs of a shutdown in the Atlantic Meridional Overturning Circulation (AMOC), one of the major current systems in the world’s oceans that plays a crucial role in regulating climate.
While assessments using climate model simulations typically suggest that AMOC is “unlikely” to pass a tipping point within the 21st century, the study says a collapse could occur “around mid-century under the current scenario of future emissions”.
(Another paper that also uses observation-based early warning signals to assess the stability of AMOC featured in second place in Carbon Brief’s leaderboard for 2021.)
The paper’s Altmetric score of 6,216 reflects its widespread news coverage, covering 672 stories from more than 500 outlets, including the Washington Post, Politico, El País, CNN and Der Spiegel.
The papers in fifth and ninth place both set out frameworks for assessing “safe” boundaries for the Earth to be a habitable place for humans.
In fifth place with a score of 5,411 is the Science Advances paper, “Earth beyond six of nine planetary boundaries”. Providing the latest assessment of the boundaries that were first established in 2009, the paper warns that “Earth is now well outside of the safe operating space for humanity”.
The ninth-placed paper, “Safe and just Earth system boundaries”, shares a number of the same authors and sets out to quantify limits for “climate, the biosphere, water and nutrient cycles and aerosols at global and subglobal scales”. When the paper was published in May, Carbon Brief reported on the mixed reaction the paper received from other scientists, including concerns that a “self-selected group of scientists” were defining the “safe space” for the planet.
In sixth place is the Science paper, “Global glacier change in the 21st century: Every increase in temperature matters”, which reveals a “strong linear relationship between global mean temperature increase and glacier mass loss”.
The study projects that glaciers outside of Antarctica and Greenland will lose between 26% and 41% of their collective mass by 2100, relative to 2015, under warming of 1.5C to 4C, respectively. Such a loss would cause 49-83% of glaciers to disappear and see 90-154mm added to global sea levels, the study says.
In seventh place is the Nature Climate Change paper, “Unavoidable future increase in West Antarctic ice-shelf melting over the 21st century”, as mentioned above. The findings, the authors say, present a “sobering outlook” for ice shelves in the Amundsen Sea.
The paper made an appearance in the Science round of Carbon Brief’s annual quiz.
The eighth-placed paper is, Quantifying the human cost of global warming, published in Nature Sustainability. It quantifies this cost in terms of the number of people left outside the “climate niche” in which human civilisation has flourished for centuries.
The study shows that climate change has already put around 9% of people outside this niche, and that, by end-of-century, current policies leading to around 2.7C global warming could leave 22-39% of people outside the niche as well.
Finally, rounding out the top 10 is, “Climate extremes likely to drive land mammal extinction during next supercontinent assembly”, in Nature Geoscience.
The study looks at the prospects for humans and other mammals on Earth based on first-ever supercomputer climate modelling of the distant future. The knock-on impacts of all Earth’s continents eventually converging to form the supercontinent “Pangea Ultima” would see huge amounts of CO2 released into the air through volcanic eruptions, it says.
The resulting global temperatures of up to 75C would, as a headline in the i newspaper put it, “one day wipe out humanity – but not for another 250m years”.
Elsewhere in the top 25
The rest of the top 25 includes a mix of research, including a paper on the impacts of El Niño on economic growth, a study on the environmental impacts of different types of diets and analysis of the amount of global warming still “in the pipeline” by former Nasa scientist Dr James Hansen.
In 14th place is the Nature paper, “Assessing the size and uncertainty of remaining carbon budgets”, which presents an updated estimate of the remaining carbon budget for limiting warming to 1.5C and 2C.
In a 2022 Carbon Brief guest post, some of the study authors present a similar analysis, concluding that the remaining carbon budget to limit warming to 1.5C could be just 260bn tonnes of CO2 (GtCO2) – the equivalent of around six years of emissions. They add:
“Cutting global CO2 emissions to zero by 2050, in line with limiting warming to 1.5C, would require them to fall by about 1.4GtCO2 every year, comparable to the drop in 2020 as a result of Covid-19 lockdowns around the world, but this time driven by a long-term, structural change of the economy.
“This highlights that the scale of the challenge is immense, no matter the precise figure of the rapidly shrinking carbon budget.”
Antarctic sea ice made headlines around the world both in 2022 and 2023, by setting two consecutive years of record low sea ice extent. In August 2023, researchers published a sobering study in Communications Earth and Environment under the title, “Record low 2022 Antarctic sea ice led to catastrophic breeding failure of emperor penguins”.
The study finds that melting ice led to widespread “breeding failure” across Antarctic emperor penguin colonies and received widespread media attention. It has been mentioned in 537 news articles, generating headlines such as, “Thousands of penguins die in Antarctic ice breakup”, from BBC News and, “Thousands of penguin chicks killed by early sea ice breakup, study says”, in the Washington Post.
The Guardian, New Scientist and Daily Telegraph were among the other publications that reported on the study. This surge of attention pushed the paper to 15th in the Carbon Brief ranking, with an Altmetric score of 3,551.
Meanwhile, the Lancet Countdown on health and climate change slipped down the rankings this year. After three years in the Carbon Brief’s top 10, this year’s report lands in 20th place with an Altmetric score of 3,191.
The report is an epic annual publication, which reviews vast swathes of literature and has more than 100 authors this year. This year’s report introduced some key new indicators of the links between climate change and human health. It was also the first to include projections on how the indicators might worsen in a warmer world.
The report finds that loss of labour due to heat exposure resulted in a $863bn loss of “potential income” in 2022. The agriculture sector was hit the hardest by the loss of labour, accounting for 82% of losses in least developed countries, the authors add.
Carbon Brief’s coverage of the report highlights this loss of income due to heat stress. The graph below shows effective income losses in 2022 due to heat stress in agriculture (blue) and other sectors (red), as a percentage of GDP, by continent.
One spot below the Lancet report is a Geophysical Research Letters study which warns that climate change is making air turbulence stronger and more frequent. The findings, which were picked up in more than 500 news articles, have worrying implications for aircraft passengers.
Back in 2017, study author Dr Paul Williams wrote a Carbon Brief guest post warning that “the most severe [type of turbulence] – the kind that can launch passengers out of their seats and cause serious injuries – is set to become twice or even three times as common by the latter half of the century”. And a recent Carbon Brief guest post on the fastest jet stream winds – known as “jet streaks” – also forecasts an increase in clear-air turbulence for aircraft passengers.
And in 24th place is the Nature paper, “Glacial lake outburst floods threaten millions globally”, with an Altmetric of 2,991. The study warns that 15 million people globally are exposed to impacts of potential “glacial lake outburst floods” (GLOFs). (For more on GLOFs, see Carbon Brief’s guest post from 2020, which explains how lakes formed by melting glaciers around the world have increased in size by 50% over the past 30 years.)
Top journals
This year there is a clear winner for the journal with the most papers featuring in Carbon Brief’s top 25: Science takes top spot with five papers.
Following Science are the three journals of Nature Climate Change, Nature Communications and the Lancet, each with two papers in the top 25.
For the rest of the top 25, the remaining 14 journals appear once each.
All the final scores for 2023 can be found in this spreadsheet.
Diversity of the top 25
The top 25 climate papers of 2023 cover a huge range of topics and scope. However, despite the variety in the climate research the papers present, analysis of their authors reveals a distinct lack of diversity.
In total, the top 25 climate papers of 2023 have more than 440 authors. Carbon Brief recorded the gender and country of affiliation for each of these authors. (The methodology used was developed by Carbon Brief for analysis presented in a special 2021 series on climate justice.)
The analysis reveals that the authors of the climate papers most featured in the media in 2023 are predominantly men from the global north.
The chart below shows the institutional affiliations of all authors in this analysis, broken down by continent – Europe, North America, Oceania, Asia, South America and Africa.
The analysis shows that nine out of every 10 authors are affiliated with institutions from the global north – defined as North America, Europe and Oceania. Meanwhile, only six authors are from Africa and South America.
Further data analysis shows that there are also inequalities within continents. The map below shows the percentage of authors from each country in the analysis, where dark blue indicates a higher percentage. Countries that are not represented by any authors in the analysis are shown in white.
The top-ranking countries on this map are the UK and the US, which together account for almost half of all authors in this analysis (25% and 18%, respectively).
More than half of all researchers from the global south are from China – which accounts for around 6% of all researchers in the analysis.
Meanwhile, only one-third of authors from the top 25 climate papers of 2022 are women. Similarly, only seven of the 25 papers have a female lead author.
The plot below shows the number of male (purple) and female (orange) authors in this analysis from each continent.
The full spreadsheet showing the results of this data analysis can be found here. For more on the biases in climate publishing, see Carbon Brief’s article on the lack of diversity in climate-science research.
The post Analysis: The climate papers most featured in the media in 2023 appeared first on Carbon Brief.
Analysis: The climate papers most featured in the media in 2023
After a four-year set up period, a fund to help vulnerable countries respond to climate impacts is facing criticism from Nigeria’s environment minister over delays in delivering aid, while its chief executive says the first disbursements will be made by the end of the year.
At an event at London Climate Action Week on Tuesday, Nigerian environment minister Balarabe Abbas Lawal said that whenever he goes to UN climate summits “we talk about loss and damage funds, and all these years nothing has been translated into action”.
He added that the fund currently “looks like a mirage”, and said that “a number of our governments are beginning to believe that COPs are just talk shops”.
The idea of addressing the loss and damage caused by climate change was first discussed at COP13 in 2007. A fund was agreed to at COP27 in 2022 to help vulnerable countries respond to climate emergencies, and it was officially set up the next year. Since then, the fund’s board and management have been working out the details of how it will work.
Ibrahima Cheikh Diong, a banker from Senegal, was appointed CEO in 2024. Referring to Lawal’s frustration, Diong told Climate Home News on Thursday that the fund is “moving according to plan”.
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A call for funding requests, launched at COP30, closed on June 15. Projects – including those to strengthen responses to floods in Bangladesh and Lagos and improve water infrastructure in Jamaica – bid for a combined $250 million. Diong said that the fund’s board would decide which projects to fund at its next board meeting in the Philippines, starting on July 8.
“We hope that by the end of the year we can begin then to make the decision and see the funds going, so hopefully the frustration for Nigeria will be reduced”, he said, adding that “every time wasted, when it comes to loss and damage, is lives not saved”.
Funding concerns
While climate campaigners have called for tens of billion of dollars of funding a year, wealthy nations have promised the fund $822 million and delivered just $449 million – with countries like Italy, France and Luxembourg failing to pay in full.
A briefing paper prepared by the fund’s secretariat earlier this year warned that, unless fresh contributions are secured, the fund could run out of resources by the end of 2027.
Diong said that the fund intends to hold a replenishment round, where governments promise money, next year. In the meantime, as public finance “is being very difficult to mobilise”, the fund is looking at other sources of funding.
“What exactly that source of funding will be, we have to look at the potential, look at the feasibility and so on”, he said, so the fund can keep up with demand.
In an open letter in April, a group of climate campaigners called for developed countries to increase contributions to the Loss and Damage fund and introduce taxes on fossil fuel companies, financial transactions, luxury air travel and wealth to help finance it.
“Rich countries must be held strictly accountable for the devastation they have caused,” said Climate Action Network International head Tasneem Essop. “Their failure to fulfill their responsibility to the loss and damage fund is not just an oversight; it is a shameful betrayal of humanity.”
The post As Nigeria rails at loss and damage “mirage”, fund boss assures money is coming appeared first on Climate Home News.
As Nigeria rails at loss and damage “mirage”, fund boss assures money is coming
Climate Change
China Briefing 25 June 2026: Five-year plans passed | Critical-mineral tensions | Industrial decarbonisation plan
Welcome to Carbon Brief’s China Briefing.
China Briefing handpicks and explains the most important climate and energy stories from China over the past fortnight. Subscribe for free here.
Key developments
New five-year plans
GENERATION TARGET: China today released its 15th five-year plan for building a “new-type energy system”, according to finance news outlet Cailianshe. It said the plan covered topics including energy sources, power-market reform and China’s role in clean-energy supply chains and climate governance. The plan, published by the National Development and Reform Commission, stated that China will aim for clean energy to constitute 30% of power generation by 2030 – up from approximately 22% today. It also stated that wind and solar will become the “mainstay” of China’s power mix. The government will work to increase clean-energy consumption, such as by upgrading the grid to “accommodate” 900 gigawatts of distributed energy and promoting emerging solutions such as virtual power plants and hydrogen. The plan also urged the “strengthening” of coal’s role as a “bottom-line guarantee”.
IN THE WORKS: At a meeting on 11 June, China’s State Council approved the “15th five-year plan for building a beautiful China”, reported industry news outlet BJX News. The meeting readout noted the importance of “actively address[ing] climate change” and developing “green production and lifestyles”, it added. The next day, the Ministry of Ecology and Environment (MEE) approved a series of environment-related five-year plans, including the “15th five-year plan for a national response to climate change”, said business news outlet 21st Century Business Herald article. The full text of the plans is not yet available.
JOBS AND GOVERNANCE: A separate five-year plan on employment included calls to “unlock employment potential” by developing “new energy system” projects, according to current affairs outlet China News. The government also published a white paper on global governance that said the “general public truly feels that nations are taking action and that unity can overcome any obstacle” to address climate change, reported state news agency Xinhua. It added that the paper called on developed countries to “honor their commitments” on climate finance. Foreign minister Wang Yi said in a press conference that China aims to “innovate governance mechanisms” to address issues such as how countries can “achieve” a global low-carbon transition, Xinhua also reported.
Critical mineral barbs
REDUCE DEPENDENCIES: The Group of Seven (G7) major economies have stated that “no single country should supply more than 60% of their imports of rare earths”, reported Bloomberg, in “an effort to reduce their reliance on China”. The full communique, which does not mention China by name, said that diversifying supply chains was “urgen[t]”, due to “market concentration”, the “growing use of arbitrary trade restrictions” and the need to “reduce vulnerabilities”. In response, China’s foreign ministry urged the G7 to “stop disrupting the international trade order” with “self-made rules”.
EXPORTS BLOCKED: The Indonesian government’s new nickel production quotas and pricing rules could put $50bn of Chinese investment at risk, Chinese diplomats argued in a letter covered by the Financial Times. Lithium miners in Zimbabwe, including Chinese firms, are asking for more time to build local processing facilities ahead of a 2027 lithium concentrate export ban, said Reuters. Meanwhile, China restricted trade with two US rare-earth companies, in response to the US adding companies including CATL and BYD to a “blacklist”, said the Financial Times. China’s exports to Japan of rare earths used to make permanent magnets remain “negligible”, reported Reuters.
DIALOGUE URGED: EU member states have asked the European Commission to develop new trade instruments to deal with the “economic threat” posed by China, reported the Hong Kong-based South China Morning Post. Despite “combative rhetoric” ahead of the summit, the Financial Times reported that the 27 leaders opted for dialogue rather than immediate action to address “global macroeconomic imbalances”. Separately, the European Commission plans to impose tariffs on Chinese plug-in hybrid electric vehicles, reported German business newspaper Handelsblatt.
CLIMATE MINISTERIAL: The EU, China and Canada held a climate ministerial, in which Chinese environment minister Huang Runqiu said countries “must strengthen cooperation rather than retreat from it”, said Euronews. Climate outlet Tanpaifang reported that Huang also said COP31 should address “insufficient emission reduction efforts and financial support from developed countries”. According to a European Commission transcript, EU climate commissioner Wopke Hoekstra said: “We need to act for climate, but also for competitiveness and independence. We cannot afford to depend on third countries.”
Mandatory targets for energy users
NEW TARGETS: From August, the Chinese government will “set binding targets” for companies on how much low-carbon power and non-electric energy they must consume, said Bloomberg. It added that targets will be set for how much low-carbon power provinces must absorb into their grids. Provinces and “key energy-consuming industries” will see their uptake of clean energy monitored on a quarterly basis and be subject to annual assessments by the State Council, said industry news outlet International Energy Net.
END-USER PRESSURE: The announcement marks the first time that China has established targets for non-fossil energy consumption at the “end-user level”, reported economic news outlet Jiemian. It added that the previous system, which only covered power, placed the responsibility for absorbing renewable energy into the grid “primarily” onto local governments and power grid companies.
SUPPORTING THE MARKET: The new measures will “help address grid integration challenges and promote better utilisation of renewable energy”, an official at the National Energy Administration told reporters, according to Xinhua. The official said it would also help boost demand for other low-carbon industries, such as “green hydrogen, ammonia and methanol”. Liu Guobin, vice-president of the China Electric Power Planning and Engineering Institute said in an “explanation” posted on International Energy Net that the measures would also “convey clear…expectations to the market” for the long-term outlook for renewable energy, “guiding the rational allocation of investment”.
More China news
- BECALMED: China’s thermal power generation rose 2.1% year-on-year in May, as “lower wind speeds curbed renewable energy growth”, reported Reuters.
- TRUCK TARGET: The government issued a new plan for developing “new-energy heavy duty trucks (HDTs)” that aims to have sales of electric, hydrogen and other low-carbon HDTs account for 40% of new truck sales by 2030, said Xinhua.
- SUPERMASSIVE SYSTEM: China’s total power capacity reached 4,000 gigawatts in May, reported BJX News, larger than that of the US, EU, India, Russia and Japan combined. Coal’s share of the capacity mix fell to 32%, while the non-fossil share rose to 62%.
- EXPORT DRIVER: China’s exports of electric vehicles (EVs) rose 54% year-on-year in May to $10bn by value and lithium-battery exports “rose 37% to $8bn”, but solar cell exports fell 7% by value to $2bn, said Caixin. The thinktank Ember found that Chinese EV exports to south-east Asia, particularly Thailand and the Philippines, reached an “all-time high” of $1.2bn.
- ONGOING RISK: The heavy rainfall seen throughout June, as well as drought, is likely to continue during China’s flood season, said the Ministry of Emergency Management in comments covered by Jiemian.
- PROJECTION PUSHBACK: The China Energy Research Society’s Wang Weiquan described projections by BloombergNEF of China’s emissions reduction and share of coal in the power mix as “overly optimistic” and “even radical”, according to the state-run newspaper China Daily.
Spotlight
What is in China’s new three-year action plan for industry?
China has issued a new action plan for energy conservation and reducing carbon emissions across nine heavy industries.
In this issue, Carbon Brief examines how the plan will impact China’s industrial development and decarbonisation.
China will conduct an “intensive campaign for energy conservation and carbon reduction upgrades” across heavy industry between 2026 and 2028.
The plan targets nine key industries: steel; electrolytic aluminum; cement; flat glass; oil refining; ethylene; synthetic ammonia; methanol; and coal-fired power.
After 2028, it said that production capacity that does not meet efficiency standards will be phased out and that efforts will be broadened to other industries.
Combined, power and industry make up the vast majority of China’s emissions profile.
Emissions in some of these sectors – notably, steel and cement – have been falling. However, chemical-industry emissions have experienced double-digit growth.
China’s power sector, which generates the majority of its electricity through coal, is responsible for around 40% of the country’s total carbon dioxide (CO2) emissions.
Focused on efficiency
The plan outlined several measures for companies to take to reduce their energy use and emissions profile.
According to a Carbon Brief count, the majority are focused on energy efficiency, such as promoting high-efficiency industrial processes and upgrading energy-consuming equipment.
More than 70% of China’s steel, aluminium, cement and flat glass capacity does not meet energy efficiency benchmarks, said a government official in a Q&A published by the National Development and Reform Commission (NDRC).
Yang Zhou, senior advisor China at Agora Energiewende, told Carbon Brief that the policy will “pick the last lowest hanging fruit” in terms of eliminating low-efficiency capacity. After this, she said, the focus will turn to entering a “deep-water” phase of decarbonising industrial capacity, as well as making it more efficient.
Some of the measures that companies are encouraged to take in the plan do directly link to decarbonisation. These include developing “hydrogen metallurgy” and sourcing low-carbon materials and fuels, as well as increasing electrification and renewable power usage.
The coal-power industry should improve flexibility, decouple combined heat and power operations and integrate biomass and renewable energy into their operations, it said.
Coal plants are expected to reduce coal consumption per kilowatt-hour (kWh) of electricity by “at least five grams of standard coal” and carbon emissions per kWh by 10%-20%, if not more.
The document said that the share of coal-fired power capacity that meets energy efficiency benchmarks should improve by 15 percentage points by 2028. This rises to 20 percentage points for the other eight industries.
By 2028, according to the NDRC, the plan aims to cut energy use by more than 100m tonnes of standard coal per year and reduce CO2 emissions by more than 200m tonnes.
Supporting business
Companies will receive support from the central government, which will subsidise 20% of the total investment that “approved” projects require.
Provinces should “fully leverage” pricing mechanisms to encourage retrofitting, said the policy.
Local policymakers can now add a surcharge of up to 0.1 yuan ($0.15) per kWh to market-traded electricity prices for non-compliant producers – which finance outlet Caixin said was a “central” tool for enforcement.
The South China Morning Post quoted an unnamed analyst, however, saying the policy may not “deliver its intended effects”, as some industries still receive subsidised electricity from local governments.
Companies will also be able to use verified CO2 emission reductions from approved projects to “offset” emissions from “new, renovated or expanded” dual-high projects. For industries covered by China’s carbon market, this may be formalised in their emissions allowances.
The NDRC official said that support should be provided to “ensure they receive reasonable returns on their carbon emission allowances”.
The policy “seeks to strike a balance” between energy security and climate goals, rejecting the “radical thinking of ‘one-size-fits-all shutdowns and phase-outs’”, according to a widely-read commentary by Sprinting Power Worker, a “self-media” WeChat account.
“For industries such as coal power, steel and cement, a gradual capacity reduction is expected due to market forces,” said Yang. She added:
“For growing sectors like chemicals and non-ferrous metals, China’s strategy is to expand capacity, [albeit] increasingly concentrated, scaled-up and efficient. Continued decarbonisation will require large-scale deployment of solutions like electrification, green power-green hydrogen coupling and circular economy.”
Watch, read, listen
SULPHURIC SLOWDOWN: Rhodium Group published an analysis of how China’s efforts to restrict exports of sulphuric acid could impact global electrification efforts.
ARCTIC ACTIVITY: The Circumpolar podcast explored the variety of interests, including energy and the environment, driving China’s actions in the Arctic.
TRANSITION IN NUMBERS: Thinktank Agora Energiewende hosted a webinar on its new report, which outlined key trends in China’s energy transition.
CARBON TAX: The Center for Strategic and International Studies looked into how China is responding to the EU carbon border adjustment mechanism.
4.9%
The amount by which China’s oil consumption is expected to fall in 2026 compared to the year before, according to a report by a thinktank under oil giant PetroChina, covered by Reuters. It said the decline is due to the “pivot to new energy and high oil prices due to the Iran war”, according to the report.
New science
- Economically developed Chinese cities “transferred” 42% of their greenhouse gas emissions related to plug-in electric vehicles to less developed cities in 2020, “substantially increasing” the recipients’ climate mitigation costs | Nature Cities
- Renewable energy development “significantly reduces” urban-rural income inequality in Chinese cities | World Development
- Grain trading between Chinese provinces increased more than fivefold between 1980 and 2020 and production shifted northward, driving a more than 217% increase in “embodied nitrogen losses and greenhouse gas emissions” | Nature Food
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China Briefing is written by Anika Patel, with contributions from Lekai Liu. It is edited by Simon Evans. Please send tips and feedback to china@carbonbrief.org
The post China Briefing 25 June 2026: Five-year plans passed | Critical-mineral tensions | Industrial decarbonisation plan appeared first on Carbon Brief.
Twice as many animals died due to heat stress en route to slaughterhouses during the UK’s record-hot summer in 2025 compared to 2024, according to new Carbon Brief analysis.
Government figures showed that nearly 6,600 animals – mostly chickens – died in transport as a result of the sweltering summer heat in England and Wales from June to August 2025.
This compared to 3,100 in summer 2024 and no official cases in summer 2023.
These figures were still below the more than 18,500 deaths recorded in the summer of 2022 when UK temperatures hit 40C for the first time, as previously reported by Carbon Brief.
The deaths are a “horrifying reminder of what happens when animals are treated as cargo”, said an animal-rights group spokesperson.
Detailed descriptions included in the data on the deaths highlighted thousands of animals dying amid heat stress, high humidity levels and long journeys.
Thousands of animals also died due to cold, wintry conditions, with more than 13,000 deaths recorded between December 2024 and February 2025 – almost double the previous winter.
Heat deaths
Carbon Brief has analysed recent years of “dead on arrival” data focused on livestock that died due to heat or cold stress en route to slaughterhouses.
The data was obtained through the UK Freedom of Information (FOI) Act from the Food Standards Agency (FSA), which is responsible for the compliance of slaughterhouses in England and Wales.
At least 1m chickens die in the UK each year while being transported to slaughterhouses due to suffocation, poor transport procedures and other issues, reported the Bureau of Investigative Journalism in 2018 .
Pigs, cows, sheep and other animals also die in this way in smaller numbers.
The new data showed that 6,595 animals died due to heat stress en route to abattoirs between June and August 2025, which was the warmest summer on record in the UK.
According to the Met Office, human-caused climate change made this summer heat 70 times more likely to occur.
Carbon Brief requested non-publicly accessible details of “dead on arrival cases” that were categorised as “suspected heat/cold stress”.
Each incident contained a detailed description written by a vet with supporting evidence about the condition of the animals, the transport conditions and the suspected cause of death. These are filed to the FSA.
The information showed that certain individual days had particularly high death tolls. Almost 1,000 chickens died in a number of incidents during a heatwave on 11 July 2025. Some chickens showed visible signs of heat stress, such as panting and immobility, the reports said.
On 12 August, amid more high temperatures, 2,154 chickens died in heat-stress incidents.
Body temperatures of some of the chickens that died on this day were as high as 46C.
A chicken will die if its body temperature exceeds 45C and it should ideally stay as close to 41C as possible, according to a 2005 document from the Department for Environment, Food & Rural Affairs (Defra).
The table below shows the total number of heat- and cold-related deaths of livestock in recent years, based on the data obtained through FOI.
The “dead on arrival” information covered every summer and winter since 2023, alongside the summer of 2022.
The figures were likely an underestimate of the total number of livestock deaths due to high or low temperatures, as they only included deaths with “suspected cold/heat stress” as a listed category.
However, the incident descriptions in many other deaths mentioned high and low temperatures as contributing factors, despite the ultimate cause of death not being labelled as such. These were not included in Carbon Brief’s tally.
The figures covered deaths in England and Wales. Scotland and Northern Ireland do not record the cause of deaths en route to slaughterhouses, so it is not possible to single out the cases linked to high or low temperatures.
Preventing deaths
These livestock deaths are a “horrifying reminder of what happens when animals are treated as cargo”, says Alex Harman, campaigns manager at animal rights group Animal Aid. He tells Carbon Brief:
“These 6,600 individuals [in summer 2025] did not just die, they suffered prolonged, agonising heat exhaustion inside metal containers – anyone experiencing the UK’s heatwave this week will be able to empathise.”
Climate change is “simply amplifying the violence already built into animal farming”, he says, adding that the only “compassionate, logical” solution is to “stop viewing animals as products and urgently transition to a plant-based food system”.
Pigs and chickens cannot sweat and face difficulties cooling down on very hot days.
Cramped or long journeys can exacerbate this, combined with high humidity levels, sometimes upwards of 80%, the livestock data showed.
Abigail Penny, the executive director of Animal Equality UK, tells Carbon Brief that “these same scenes of extreme animal suffering play out every summer and, if nothing is done, it’s only going to get worse”.
Workers transporting animals during extreme weather conditions are expected to put in place measures to protect them, according to UK government guidance.
These measures can include ensuring water and ventilation systems function properly on vehicles, avoiding travel during the hottest or coldest parts of the day and recognising signs of heat and cold stress in animals.
The FSA said that the number of “dead on arrival” incidents caused by cold and heat stress increased by more than 50% between April 2024 and March 2025 compared to the same period the year prior.
The FSA and Defra declined Carbon Brief’s request to comment on the new figures.
Cold deaths
Thousands of animals also die due to cold stress while travelling to slaughterhouses each year. Carbon Brief assessed data for these deaths in the winters of 2023-24 and 2024-25.
At least 13,057 livestock animals died due to cold weather conditions between December 2024 and February 2025. This is more than double the number – 6,981 – that died the previous winter.
On 6 February 2025 alone, 4,056 poultry deaths were reported due to cold weather impacts.
Some livestock also died due to cold conditions in the summer months.
For example, 326 animals died amid cold weather in the summer of 2023. No official heat-related deaths were recorded in that period, but a number of incidents referred to hot-weather conditions or heat stress as contributing factors.
Overall, 2023 was a very warm year in the UK, with soaring temperatures in June and September. At least 3,103 animals died from heat stress in September, the figures also showed.
Conditions were cooler and wetter in July and August, which may have contributed to the absence of heat-stress deaths.
Most cold deaths during warmer months occurred in the early hours of the morning or overnight when temperatures dropped, the FOI data shows.
On 28 August 2025, for example, 134 chickens died due to cold stress. The incident description outlined that the animals were “very wet”, dirty and had few feathers, which can reduce a chicken’s ability to hold warmth.
The animals were transported overnight to a slaughterhouse and “suffered distress and pain” because of the weather and other factors, the description noted.
The post Livestock heat deaths in transit doubled in UK record-hot summer of 2025 appeared first on Carbon Brief.
Livestock heat deaths in transit doubled in UK record-hot summer of 2025
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