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China Briefing handpicks and explains the most important climate and energy stories from China over the past fortnight. Subscribe for free here.
Key developments
China to play major role in global energy shift
ELECTRIFICATION: As the world moves into the “age of electricity”, China’s per-capita demand for electricity will grow to overtake that of all advanced economies combined by 2030 under current policy settings, according to the International Energy Agency (IEA)’s World Energy Outlook (WEO) 2024. The report said this is due to the country’s rising electrification, pushed forward by adoption of electric vehicles (EVs) and other low-carbon technologies, as well as economic growth.
LOW-CARBON POWER: China accounted for 60% of worldwide renewable installations in 2023 and its solar power generation alone will, by 2035, exceed the US’ current total electricity demand, WEO said. A separate IEA report released last week found that China will add 60% of new renewables installations globally between 2024 and 2030. This rapid expansion, according to WEO, will help China lead a global decline in carbon emissions after 2030, with China’s emissions falling to 8% below 2023 levels by 2030 and 24% below by 2035, based on current policy settings. (These figures rise to 17% and 45%, respectively, if China meets its announced pledges.) However, to align with the IEA’s scenario for net-zero emissions by 2050, China’s clean power would need to expand 1.5-times faster than current rates and investment – particularly in grids and energy storage – would need to double.
OIL SLOWS, COAL RISING: China, the world’s largest importer of oil, is currently spurring a “major slowdown” in oil demand growth, largely due to its rapid adoption of EVs, said the report. However, the IEA also said that China will overtake the US as the world’s largest oil consuming country by 2030 and remain the largest oil importer until 2050. Similarly, China is also the largest coal user. It consumed around 55% of the coal used to generate electricity globally and added 73% of the world’s new coal-fired power capacity in 2023, WEO said. (Bloomberg reported that China is also still developing new coal-fired power overseas.) Nevertheless, WEO added that China’s coal consumption for power is likely to peak “in the next few years”.
High-level environmental meeting held
ANNUAL MEETING: The China Council for International Cooperation on Environment and Development (CCICED), a high-level environmental advisory body to the Chinese government, held its annual general meeting on 10-12 October, Earth Negotiations Bulletin reported. About 400 people, including global experts, such as WWF director general Kirsten Schuijt, and high-profile Chinese officials attended the meeting, said China Environment News. Following discussions supervised by the Ministry of Ecology and Environment, CCICED revised a series of draft recommendations, which included: combining “ambitious goals with pragmatic actions” in China’s “nationally determined contribution” under the Paris Agreement and establishing an absolute emissions reduction goal for 2035; setting a target of 2,400 gigawatts (GW) of solar and wind capacity by 2030 and 6,000GW by 2040; and accelerating the expansion of the national carbon market and shifting to auctions for carbon allowances, which are currently given for free.
HEAVY HITTERS: Several influential political figures spoke at the meeting, including executive vice-premier Ding Xuexiang, who reiterated China’s willingness to “work with all parties” on building “a clean and beautiful world” and said it will follow the principle of “common but differentiated responsibilities” in “global environmental challenges”, according to the Communist party-affiliated newspaper People’s Daily. Environment minister Huang Runqiu told delegates that, to advance climate goals, China will focus on six key areas: better “prevention” of emissions; more “precise” emissions control; building “norms” and standards in climate policy; “market guidance”; scientific and technological “empowerment”; and “openness and win-win cooperation”, state news agency Xinhua said. Chinese climate envoy Liu Zhenmin said that “many of the concerns of developing countries at COP28 have not been adequately addressed”, adding that “developed countries…[need to take] the lead in reducing emissions”, according to news outlet China News. Liu’s predecessor, Xie Zhenhua, said in a speech that, “compared with mitigation, in developing countries, adaptation…needs to be solved more than anything else”, said the Paper, a Shanghai-based newspaper.
Diversifying critical mineral supply chains
GROWING FRUSTRATION: The Democratic Republic of Congo (DRC) confirmed that it is “courting new investors” in order to “diversify ownership” in its mining industry, currently dominated by China, Bloomberg reported. It quotes mines minister Kizito Pakabomba saying the country “is looking to make strategic choices about who runs Congo’s mines”. The outlet added that the DRC has “grown increasingly frustrated by its lack of influence over its mining industry, particularly in cobalt”, a mineral central to the production of some types of EV batteries. The Wall Street Journal said the US is encouraging companies to purchase cobalt producer Chemaf in DRC, after blocking its sale to the Chinese state-backed Norin Mining.
MINERALS ALLIANCE: Meanwhile, the US and India have agreed to “cooperate on strengthening supply chains in India and US for lithium, cobalt and other critical minerals”, the Indian Express reported, adding that the agreement “still fall[s] short of a full critical minerals trade deal” allowing India to access US tax credits for EVs. The newspaper also noted that India’s commerce minister Piyush Goyal aimed to “include other countries in the partnership, especially those who are already mineral rich like countries in Africa and South America”. In response to the agreement, an editorial in the state-run newspaper China Daily said the US, “understandably, does not want to put all its eggs in one basket in the face of rising tensions with China” and described a similar minerals deal with Vietnam as “lip service”, adding that “the US helps none but itself”.
HARSH RHETORIC: Meanwhile, the US Department of State’s under secretary for economic growth, energy and the environment Jose Fernandez criticised China for producing too much lithium for global consumption and alleged it was triggering a “predatory” price drop in an “intentional response” to the US’ Inflation Reduction Act, in comments covered by Reuters.
Spotlight
China’s birth policy ‘could raise emissions 20% by 2060’
A study published in Nature Climate Change finds that China’s current population policies – allowing families to have three children – could increase its future carbon emissions.
However, lead author Prof Zhifu Mi, who researches climate change economics at University College London’s (UCL) Bartlett School of Sustainable Construction, tells Carbon Brief that this finding is not to imply that China should reverse its demographic policies.
In an interview, Mi says that, in response to the findings, China could consider a “synergistic approach” to both “fertility policies” and “climate action strategies”.
Carbon Brief: What impact does China’s current population size and demographic makeup have on its carbon emissions?
Zhifu Mi: Population size and demographic composition significantly influence a country’s carbon emissions. Population is one of the primary drivers of greenhouse gas emissions. China has long been the most populous nation, contributing to its status as the largest carbon emitter all over the world. [In 2023, India overtook China as the world’s most populous nation.]
Age structure also plays a role in emissions. The per-capita carbon footprint of younger people (under 30) in China is approximately 1.8 times that of older people (60 and above). This pattern contrasts with developed countries, where older individuals often have higher carbon footprints.
CB: To avoid demographic pressures, China is encouraging families to have three children and its workforce to delay retirement. You found that relaxing limits on family size would make it harder to meet China’s carbon neutrality goal. Could you explain these findings?
ZM: Both relaxing fertility policies and delaying retirement would increase carbon emissions via boosting the labour force. The impact of relaxing fertility policies [and allowing families to have more children] is notably greater than delaying retirement. Shifting from a two-child to a three-child policy would result in a roughly 20% increase in China’s total carbon emissions by 2060.
CB: How are the emissions profiles of China’s young people different to its elderly?
ZM: Younger individuals in China have higher per-capita carbon footprints due to age-related income differences. Their higher per-capita carbon footprints are related to clothing, goods and transport, while older Chinese have higher per-capita carbon footprints related to healthcare.
CB: Some previous research, suggesting that having fewer children is one of the best ways for individuals to cut their carbon footprints, has been criticised for ignoring the impact of climate action, which could reduce the per-capita emissions of the next generation. What do you think about the wider debate on population growth and climate change?
ZM: I disagree with the idea that having fewer children is one of the best ways to cut carbon footprints. Beyond climate change mitigation, we have many other Sustainable Development Goals to consider. While reducing population growth can lower carbon footprints to some extent, population also drives socio-economic development.
Our research indicates that relaxing fertility policies would increase China’s household carbon footprint. We present this objective phenomenon with the hope that this impact of fertility policy will be integrated into climate action strategies.
CB: The paper states that your results should not be read to imply that China must reverse its three-child and retirement-delay policies, but that the policies should be synergised with emissions reductions targets. In your view, what steps could the Chinese government take to do so?
ZM: Yes, our result is not to imply that such policies should be avoided to reduce environmental pressure. We recommend a synergistic approach, considering both population policies and climate goals.
First, climate policies should be tailored to the specific demographic structures of different regions in China – promoting greener consumption and sustainable lifestyles among younger people is crucial. Second, addressing income and consumption disparities across age groups can help mitigate the carbon impacts of fertility and retirement policies. Third, when setting climate targets for each province, population size and demographic composition should be key considerations.
CB: Your paper talks about the need to explore what would happen if China misses its 2060 target, which, as China’s NDC notes, is a challenging goal to meet. What do you see as the key hurdles in this effort?
ZM: Achieving carbon neutrality is a significant challenge for China, particularly because the country has only 30 years to reduce its net carbon emissions to zero after peaking. In contrast, developed countries have had much longer timelines. For instance, the EU…[has allowed] for about 70 years to reduce emissions [from its peak to net-zero]. The US, with a peak in 2005, has 45 years to reach net-zero. China’s more compressed timeline, coupled with the higher volume of emissions to be reduced, makes the challenge more daunting.
Furthermore, China’s energy mix, which is dominated by coal and lacks sufficient oil and gas resources, poses another significant hurdle…Finally, China’s regional economic development is uneven. Eastern regions have witnessed rapid economic growth and industrialisation, while central and western regions lag behind. This imbalance…further complicates China’s path to carbon neutrality.
Responses have been edited for length and clarity.
Watch, read, listen
SUNNY DISPOSITIONS: State broadcaster CCTV’s flagship interview programme Duihua (Dialogue, 对话) aired a discussion of the state of the solar industry with major Chinese solar manufacturers, including Tongwei, LONGi and JingkoSolar.
FIVE-YEAR PLAN: The California-China Climate Institute, a research institute housed at UC Berkeley, issued recommendations for ways Chinese policymakers can take climate goals into account as they prepare for the 15th “five-year plan” (2026-2030).
NDC WATCH: China must avoid setting “conservative near-term climate goals”, an opinion article in Foreign Policy by Lauri Myllyvirta, senior fellow at the Asia Society Policy Institute, and Byford Tsang, senior fellow at the European Council on Foreign Relations, argued.
GREEN FINANCE: Yuan Yuan, a climate and energy campaigner at Greenpeace East Asia, wrote in the Shuang Tan newsletter how the asset management industry can improve climate-related risk management and disclosure standards.
51%
The percentage of Chinese citizens who believe that the US and China have “common objectives” on environment and climate change issues, according to a public opinion poll carried out by Tsinghua University on China’s outlook on international security. Respondents also ranked climate change as the 8th most concerning risk from a list of 18 global security challenges.
New science
Can combined wind and solar power meet the increased electricity load on heatwave days in China after the carbon emission peak? A case study in southern Hebei
Journal of Cleaner Production
A new study revealed that wind and solar power generation could meet the increase in electricity consumption in China’s Hebei province on heatwave days from 2039, in part because heatwaves would raise wind and solar power generation as well as power demand. Using data from the south of Hebei province, which boasts the highest combined wind and solar capacity in China, researchers developed load and wind power models and calibrated “a boosting ensemble learning model to simulate solar generation”. Results showed Hebei could “harness” wind and solar energy to address demand but energy storage capacity would be needed to ensure full coverage.
Comparative analysis of embodied carbon in modular and conventional construction methods in Hong Kong
Scientific Reports
Using modular integrated construction, where parts of new buildings are prefabricated elsewhere and brought to be installed on-site, rather than conventional construction methods, reduced embodied carbon in a Covid-19 isolation facility in Hong Kong by 21%, according to a new study. The study used an embodied carbon assessment of the isolation facility. It found that the reduction in embodied carbon was primarily due to “shortened construction timelines, decreased waste generation and optimised material usage”.
Energy transition in China: Is there a role for climate policy uncertainty?
Journal of Environmental Management
New research found that climate policy uncertainty in China “significantly hinders the progress” of China’s energy transition, particularly by “reducing the level of green finance development and hindering the optimisation of [the] energy structure”. The study used data from 277 Chinese cities to assess this dynamic, discovering that in regions with “weak environmental regulations, high fiscal decentralisation and low administrative levels”, uncertainty has a higher impact on energy transitions. It also stated that climate policy uncertainty further limited the “high-quality development” of China’s economy and levels of “green innovation”.
China Briefing is compiled by Wanyuan Song and Anika Patel. It is edited by Wanyuan Song and Dr Simon Evans. Please send tips and feedback to china@carbonbrief.org
The post China Briefing 17 October 2024: China’s electrification to disrupt oil; High-level environment meeting; Aligning China’s population and climate policies appeared first on Carbon Brief.
Climate Change
Despite African walkout, fractious land COP ends without drought deal
The African continent’s hopes for a legally binding agreement to combat drought have been dashed again, as UN land restoration talks in Mongolia passed the issue onto the next set of talks in Egypt in two years’ time.
For over a decade, Africa has pushed for a UN protocol on drought risk management that would acknowledge drought as an issue requiring a regional and global – not just a national – response, potentially paving the way for more finance to help ensure water is available when drought hits.
A formal protocol would enable countries to transition from reacting to drought once it hits to “a proactive enabling mechanism to address drought and its effects such as migration”, said a Tunisian negotiator on behalf of the African Group of countries last week. Once land is regularly too dry and infertile to grow crops or graze animals, people often leave to seek a living elsewhere.
But this effort to adopt a protocol, led by Africa, has been resisted at successive land restoration COPs under the UN Convention to Combat Desertification (UNCCD), mainly by developed countries, which argue that a legally weaker alternative – a framework – would be faster and cheaper to set up.
Governments at the previous COP in Saudi Arabia in 2024 failed to reach agreement despite talks running past midnight, while this year’s saw African officials coordinate a walkout from negotiating rooms on Wednesday morning, according to two sources at the talks.
Drought deal delayed until 2028
The IISD’s Earth Negotiations Bulletin, a non-governmental organisation which unlike the media is allowed to watch and report on closed-door talks, said a call to suspend negotiations on Wednesday showed negotiations had reached “boiling point” and “made some jaws drop”.
Negotiations resumed after a lunchtime meeting with the Mongolian COP presidency although governments were only eventually able to agree that they could not find consensus in Ulaanbaatar and should resume talks on an instrument to deal with drought in 2028.
Christine Colvin, WWF’s head of freshwater policy, told Climate Home News that, with droughts hitting from Honduras to the English region of Hampshire, something concrete – whether a protocol or a framework – is needed urgently “rather than the can being kicked down the road for another two years as will now happen with the protocol procrastination”.

But, in a closing press conference on Friday, the Mongolian minister presiding over talks celebrated that governments had reached consensus on several “contentious” issues and that agenda items blocked at this year’s COP17 would be put on the agenda for COP18 in Egypt.
US blocks agenda items
Other agenda items that divided countries were on measuring land degradation’s effects on women, enhancing the involvement of civil society and women in land COPs, and the UNCCD working more closely and effectively with the UN’s climate and nature conventions.
On the COP’s opening day two weeks ago, the US representative said the Trump government objects to these agenda items “on their premise and no amount of negotiation will allow us to join consensus on these items. As such we request that they be struck from the agenda at which time we will then be able to approve it, saving us valuable negotiating time.”
A US State Department spokesperson later told Climate Home News that the US wants the UN “to get back to basics by refocusing on its core mandate, eliminating overlap, and reducing competition for scarce resources”.
The spokesperson added, “that means prioritising the concrete work member states created [the UN] to do – rather than diverting limited time, attention, and resources toward social and political agendas, including gender-related initiatives.”

On COP’s first day, the European Union and Brazil pushed back against the blocking of these agenda items, with a Brazilian negotiator saying his country attaches “great importance” to them. But the Mongolian presidency directed governments to adopt the rest of the agenda without the controversial items, which were discussed privately with countries throughout the two weeks.
An EU statement, read out later by Irish minister Timmy Dooley, accused “some parties” (meaning national governments) of having adopted a “less constructive approach” and preventing “discussions on important matters from even commencing”.
The agenda items the US refused to engage with were never discussed and were only placed onto the agenda for the next COP on the last day. Those talks will take place in Egypt in two years’ time, with Donald Trump due then to be in his last year as US president.
No restoration without women
The blocking of the gender agenda item has stymied attempts, agreed on by governments at the last COP, to develop gender-specific indicators for the UNCCD’s next overall framework and to facilitate more women delegates at COPs. Women made up only about a quarter of delegates to COP15 in 2022, UNCCD analysis with the latest data shows
Criticising the move to keep gender off the agenda, the EU said in a statement that it welcomes “the attention being given at COP17 to women pastoralists and herders, recognising their contribution to sustainable land management and resilient rural livelihoods”.
The head of the UNCCD, former Egyptian environment minister Yasmine Fouad, said on Friday that “regardless that the agenda item was blocked”, she was proud that she and COP17 President Batmunkh Battsetseg had led the COP as women and attended the gender caucus (a meeting of groups supporting women at the talks).

“Without the women,” she told the closing press conference on Friday, “we will not be able to restore land, restore hope, restore life or restore even our children and grandchildren. And we will keep on pushing that agenda.”
The civil society agenda item aimed to allow NGOs to attend land COP negotiations, as they do at climate COPs, and included terms of reference for an Indigenous Peoples Caucus.
A representative of Indigenous Peoples told the COP’s closing plenary meeting that the group had “deep disappointment that the agenda of this COP has removed the dedicated space for indigenous peoples”. “We cannot restore the land while removing the voices of those who care for it,” she said.
On Tuesday, the UNCCD’s deputy head Andrea Meza was asked about Indigenous Peoples’ participation. She said that the blocking of “one agenda item” is “generating uncertainty in the progress” towards creating caucuses for Indigenous Peoples and for Local Communities within the talks.
Because of the “complex geopolitical situation” making it hard to obtain consensus, coalitions of the willing have become more important, she added.
Mining out, money in
Outside the formal negotiations, the summit was marked by a focus on the strongly Mongolian issues of the role played by pastoralists and rangelands like grasslands, as well as mining, in both degrading and restoring land.
Part of the conference was sponsored by Australian mining company Rio Tinto and its local partner Oyu Tolgoi. Their presence was protested by campaigners wearing T-shirts calling on the companies to “stop wasting drinking water” and to “get out of Mongolia”.

The UNCDD and others praised the success of the summit in raising more finance for land restoration. The COP saw institutions like the Asian Development Bank and Global Environment Facility pledge money to combat land degradation, with the UNCCD estimating that $645 million of new commitments were made.
An estimated $355 billion a year is needed through 2030 to meet global land restoration commitments, compared with around $77 billion currently invested. Private finance accounts for only around 6% of global investment, according to the UNCCD.
UNCCD chief scientist Baron Orr told a press conference that many of the announcements were public-private partnerships that use government money to “even the playing field” for companies that want to protect land, in a bid to ensure they are not disadvantaged compared with those that do not.
Such partnerships are a “huge opportunity”, he said, especially as “we’re not in a moment of public finance – public finance is tight in every country.”
The post Despite African walkout, fractious land COP ends without drought deal appeared first on Climate Home News.
Despite African walkout, fractious land COP ends without drought deal
Climate Change
Pacific islands seek backing for new regional fund ahead of COP31
Burdened by rising fuel import costs and an “ocean crisis” of record-breaking heat, Pacific island nations are seeking to build support for a new regional fund ahead of COP31, intended to channel investment into renewable energy, community resilience and ocean protection, experts said.
Leaders from the 18-member Pacific Islands Forum (PIF), including Australia and New Zealand, are expected to issue a call for global pledges to the Pacific Resilience Facility (PRF) at a high-level meeting this coming week in Palau, seeking to build a new model for financing climate action.
The new regional fund was formally launched in May this year and is meant to “serve communities at a community level”, swiftly channelling investments for their projects on the ground, according to Fiji’s assistant minister for foreign affairs, Lenora Qereqeretabua.
“We are expecting pledges for the PRF, and these funds will go to communities that apply,” she told journalists at an online briefing. “We have organised it in such a way that it makes our application processes much, much easier than applying for global funding.”
Qereqeretabua added that she expects that PRF funds will be “utilised by communities to protect themselves from climate change and the effects of climate change.”
The Pacific Islands Forum meeting is expected to shape the region’s priorities ahead of this year’s pre-COP, hosted by Fiji and Tuvalu, and COP31, which will be co-led by Australia and Türkiye.
At COP31, a dedicated session on the climate finance needs of small island states will seek to drive pledges into the PRF. The fund has so far received about $172 million in capital – with about $67 million coming from Australia – and aims to close the year with $500 million.
Ocean heat and fossil fuel shocks
Leaders from the Pacific will meet in Palau from Sunday amid an “ocean crisis” of record-breaking ocean heat caused by this year’s “super El Niño”, according to Kevin Chand, Pacific ocean policy director at National Geographic’s Pristine Seas conservation project.
Leaders at the PIF are expected to put forward commitments towards new marine protected areas, which will be key for shielding ecosystems from future climate extremes, Chand said. The forum is expected to issue a statement on the need for ocean action at COP31, and announce commitments towards reaching the global goal of protecting 30% of the planet’s land and sea ecosystems by 2030.
Rising ocean heat could lead to food insecurity and lost government earnings in the region, as key fish stocks like tuna start migrating away from their coastline in search of colder waters, said Coral Pasisi, director of climate change and sustainability at the Pacific Community (SPC).
Climate shocks are deepening existing economic pressures, as Pacific nations have spent up to a quarter of their GDP on fossil fuel imports due to the war in Iran, according to a recent report by the University of New South Wales (UNSW) in Australia.
Wesley Morgan, one of the study’s authors, told journalists that partner nations “ought to be putting their money where their mouth is”, and should support the energy transition in the Pacific by covering the upfront costs of switching from polluting diesel to solar power, batteries and electricity grid upgrades.
China keeps Indonesia’s battery dream afloat but future less certain
Given the increase in climate-related shocks and sea-level rise, the PIF should also mention the need to phase out fossil fuel extraction and consumption, said Sindra Sharma, international policy lead at the Pacific Islands Climate Action Network (PICAN).
Last year’s COP30 failed to deliver a global roadmap on transitioning away from fossil fuels, which led to a group of countries – including several Pacific island nations – pursuing their own fossil fuel phase-out summit in Santa Marta, Colombia. Next year’s conference will be hosted by Tuvalu and co-chaired by Ireland, which should also receive backing from the PIF, Sharma said.
Both the chairs of the Santa Marta coalition and the Australian COP31 co-presidency have vowed to continue a push for this topic to be discussed at COP31.

New fund to test allies
As local communities in the Pacific struggle to access global climate funds, the PRF’s planned model for quick, direct disbursements has “very solid and good” intentions, Sharma said, but it will need political and financial backing from donor countries.
“The proof is going to be when the fund actually starts operating and delivering to communities,” she added. “If there is too much bureaucracy in being able to access the funds, for example. These things will have to be scrutinised.”
The facility aims to deliver funds in two categories: one for climate adaptation and “disaster resilience”, and another for social and community resilience that includes areas like community capacity-building, education, data analytics and financial management, among others. It will launch its first call for proposals at the PIF.
Morgan added that Australia will need to “leverage global interests” so that funding is directed to the Pacific Resilience Facility “or else the Pacific won’t be able to trust Australia as a partner”. The country ratified the PRF treaty in May, triggering its entry into force.
“The perception [of Australia] in the region is genuinely divided, and it’s worth being honest about it,” Sharma said, adding that the pre-COP31 in Fiji, which is usually limited to a technical space for negotiations, will determine how meaningful Australia’s advocacy for the Pacific can be.
This time, Pacific nations want to use the pre-COP in early October as an opportunity to demonstrate the challenges their largely low-lying islands face and to advocate for their political priorities, including a renewed global effort to limit global warming to 1.5C by cutting emissions faster and deeper. World leaders are due to visit Tuvalu to experience the frontline of rising sea levels, although Australia and Fiji have yet to confirm who will attend.
“In Bonn, Australia was largely missing on the negotiated outcomes that we so urgently need to see. It’s not enough to get Pacific priorities on the agenda. Agenda placement is not delivery,” Sharma added.
The post Pacific islands seek backing for new regional fund ahead of COP31 appeared first on Climate Home News.
Pacific islands seek backing for new regional fund ahead of COP31
Climate Change
Climate change exposes 580 million children to 20 extra ‘heat-stress days’ every year
More than 40% of children under the age of 10 globally are already experiencing at least 20 additional “heat-stress days” due to climate change.
This is according to a new attribution study, published in Science Advances, which combines climate models with demographic data to assess the age groups and regions that are exposed to the most hot, humid days.
The study finds that children up to the age of nine already face more additional heat-stress days globally as a result of climate change than any other age group.
It adds that south Asia and west Africa are recording the greatest childhood exposure to dangerous levels of humid heat – largely because these regions have a rapidly growing population with the highest proportion of young children.
As the climate warms, children will continue to be more exposed to heat stress than any other age group, the paper warns.
The lead author of the study tells Carbon Brief that the findings should inform discussions about climate justice, noting that children in developing countries “have contributed the least to historical greenhouse gas emissions”.
Humid heat
High temperatures can be deadly. For example, the heatwaves that swept across Europe in the summer of 2026 have been linked to tens of thousands of “excess deaths”.
A prominent 2021 study found that children born in the 21st century will be exposed to more extreme weather events in their lifetimes than their parents and grandparents.
Four years later, a study conducted by scientists from the same team found that more than half of children born in 2020 – around 62 million people – will experience “unprecedented lifetime exposure” to heatwaves, even if warming is limited to 1.5C.
Now, the latest research from the same team finds that children already face greater exposure to dangerous levels of humid heat than adults as a result of human-caused climate change.
Extreme heat is particularly dangerous when combined with high humidity. In hot weather, the human body produces sweat to cool itself down. However, as humidity increases, sweating becomes less effective.
The study uses wet-bulb globe temperature – a measure of temperature that takes humidity and wind into account – to calculate heat stress. It defines a “heat-stress day” as any day with a wet-bulb globe temperature above 28C, as this is considered the threshold for “moderate heat stress”
The authors then use climate models to simulate global temperature patterns in the present-day climate. (The authors use the climate of 2023, in which human activity has caused 1.3C of warming, to represent the “present-day”.)
They then count the number of heat-stress days that each country records on average, per year. The authors then repeat this exercise, simulating a pre-industrial climate without human-caused warming.
By comparing the number of heat-stress days in the present-day climate with the number in a pre-industrial climate, the authors can determine how many extra heat-stress days were driven by climate change. They refer to these as “extra” or “attributable” heat-stress days.
The authors find that “low-latitude” countries, located in the tropics, record the most extra heat-stress days.
For example, the paper finds that people living in Côte d’Ivoire currently face 112 heat-stress days every year. It adds that around half of these are due to human-caused climate change.
In contrast, Germany sees only 0.1 heat-stress days per year in today’s climate on average, which is largely attributable to human-caused climate change.
Rosa Pietroiusti, a PhD student at Vrije Universiteit Brussel and lead author on the study, explains why this number may seem lower than expected.
She tells Carbon Brief that the paper “really focuses on humid heat, at levels that are relatively rarely felt in Europe”. She adds:
“Our data also doesn’t capture the urban heat island effect, due to the resolution of the data we use, which also would lead to underestimations of heat stress locally, and lead to a mismatch with what people are experiencing at local scales, particularly in cities.”
Inequality
Extreme heat affects some people more severely than others. Children, people over 65 and those with pre-existing medical conditions or certain disabilities are among the most vulnerable. This is because their bodies are less able to regulate their temperature.
The authors use gridded demographic data to determine the age structure of each country. From this, they calculate how many people from each age cohort are exposed to extra heat days as a result of climate change.
The research finds that globally, 583 million children under the age of 10 already live through at least 20 attributable heat days every year. This accounts for 44% of all children in this age bracket.
In comparison, 190 million people aged 60-69 face at least 20 attributable heat days per year, accounting for 30% of this age cohort.
The authors find that children face the greatest exposure to humid heat for two main reasons.
First, there are more young people alive today than older people, with 1.3 billion children aged under 10 in the world, compared to 0.6 billion people aged 60-69.
Second, they find that countries in Africa and Asia typically have rapidly growing populations with more young children. In contrast, many countries in the northern hemisphere – which are typically cooler – have older populations.
The map below shows how many extra stress heat days each country currently faces as a result of human-caused climate change. Darker reds indicate a higher number of attributable heat days. The blue circles show the percentage of the population under the age of 10, with larger circles indicating a higher percentage.

Warming world
The authors also repeat their analysis for a 1.5C and 2C warmer world. They use population estimates from the SSP2 scenario, which projects that the world’s population will peak at more than nine billion in the second half of the 21st century, with most growth occurring in low-latitude regions – especially in sub-Saharan Africa.
The research finds that, in today’s climate, 11% of all under 10s currently experience 100 or more extra heat-stress days per year due to climate change. In worlds warmed by 1.5C and 2C, the percentage rises to 13% and 23%, respectively.
In contrast, only 6% of all people aged 60-69 currently face 100 or more extra heat-stress days each year due to climate change. This number rises to 9% and 17% for 1.5C and 2C worlds, respectively.
These results are shown in the plot below. The three rows represent the climates of 2023 (top), a 1.5C world (middle) and a 2C world (bottom). The columns show different age cohorts, from the oldest on the left to the youngest on the right.
Each circle contains 100 coloured dots, with each dot representing 1% of the age cohort.
The colour of the dot represents exposure to annual heat-stress day, with darker dots indicating more heat-stress days. Grey dots mean that people experience fewer than one extra heat-stress day per year due to human-caused climate change, while black dots mean more than 150 extra heat-stress days due to climate change.
The figure shows that higher warming levels expose more people to heat stress and that younger cohorts tend to be worst affected.
For example, the top-right circle represents heat stress for under 10s in the present-day climate. Three of these dots are coloured black, indicating that 3% faced at least 150 attributable heat-stress days in 2023.

Pietroiusti tells Carbon Brief the study uses wet-bulb temperature because it is a “well-established heat stress metric”. However, she notes that it was not “explicitly defined to focus on children”. She continues:
“A really important step forward in the research community would be to link up climate science and health science experts to do research on what metrics are really most representative of, for example, health impacts and educational impacts that children will be suffering.”
Vulnerability
Dr Qinqin Kong, a postdoctoral researcher at the departments of medicine and health policy at Stanford University, who was not involved in the study, praises its “robust” methodology.
He tells Carbon Brief that the research provides “a timely quantitative evidence for discussions of climate justice, children’s rights and intergenerational equity”.
However, Kong suggests that the paper “may overstate the contrast between children and the elderly and underestimate the relative burden of older adults”.
He says:
“The elderly may also be more vulnerable due to their social circumstances. Children often benefit from parental supervision and caregiving, whereas many older adults live alone, have limited mobility and face barriers to accessing cooling or emergency assistance during heat events.”
Kong also notes that “people and societies in the mid-latitudes [for example, across much of Europe and North America] are less adapted to heat”, which may make them vulnerable to its impacts.
For example, he says that Europe “shows substantially stronger relative risk of heat mortality likely due to less heat-acclimatised populations, lower air conditioning prevalence and urban designs that don’t favour heat dissipation”.
Similarly, Dr Daniel Vecellio – a researcher at the University of Nebraska, who was not involved in the study – tells Carbon Brief that children are an “understudied cohort”.
However, he says there is “reason for hope” because “children are typically pretty good behavioural adapters to extreme heat” and because people who are “chronically exposed to extreme heat” will “have a better chance at better acclimatisation”.
Pietroiusti tells Carbon Brief that global reporting on heatwaves is often skewed towards wealthier nations.
For example, she notes that large-scale databases of disasters, such as EM-DAT, often underrepresent heatwaves in Africa, due in part to a lack of news coverage and formal reporting. She adds:
“Studies like this, which start from the climate data, can start to fill some of these gaps.”
She adds that the paper should inform discussions about climate justice, noting that children in developing countries, who are most severely affected by the increase in heat-stress days, “have contributed the least to historical greenhouse gas emissions”.
Pietroiusti, R. et al. (2026) Age-specific exposure to human-induced increases in humid heat, Science Advances, doi:10.1126/sciadv.aeb3232
The post Climate change exposes 580 million children to 20 extra ‘heat-stress days’ every year appeared first on Carbon Brief.
Climate change exposes 580 million children to 20 extra ‘heat-stress days’ every year
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