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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

Trump to overturn ‘endangerment finding’

EPA OVERTURNING: The Trump administration announced its plan to overturn the 2009 finding that has been the “central basis” for US action to regulate greenhouse gas emissions, the Associated Press reported. A new Environmental Protection Agency proposal would rescind the “endangerment finding”, which determined that carbon dioxide and other greenhouse gases endanger public health and welfare, according to the newswire. If the finding is repealed, it would “erase current limits” on greenhouse gas pollution from cars, factories and power plants, AP said.

‘MISLEADING’ REPORT: The proposal is supported by a new Department of Energy report that uses “misleading and inaccurate” statements to argue that climate science has “overstated” the risks of a warming planet, Politico reported. The report, which also argues that climate science is “underestimating” the societal benefits of burning fossil fuels, was written by five scientists who “are known” for “denying accepted climate science”, the outlet added.

‘WINDMILL DISGRACE’: Wind development on federal lands and waters may be halted by the Trump administration, Bloomberg reported. Interior secretary Doug Burgum ordered a comprehensive review of the agency’s approval process, it said. According to Renewable Energy News, the department said more than 3.5m acres offshore were designated as “wind energy areas” by the last administration and that “terminating” these areas is “safeguarding” local environments and economies from “unchecked development”. This followed from Trump’s recent comment that “windmills are a disgrace”, the publication added.

Floods and heatwaves

SEVERE FLOODING: Torrential rains triggered a devastating flood in northern Nigeria, leaving at least 23 people dead, Deutsche Welle reported. The flooding has displaced 5,560 people and left dozens injured, according to the National Emergency Management Agency. More than 200 people have been killed in floods in Nigeria since the start of the rainy season in May this year, according to DW. The outlet reported that scientists have said climate change is fuelling many of these extreme weather occurrences.

BEIJING RAINS: China faced “another deadly rainy season” after 60 people were killed following days of torrential rain in Northern Beijing, reported Reuters. The outlet said climate change has made extreme weather “more frequent and intense”. Elsewhere, floodwaters from the Indus and Chenab rivers have “inundated” more than a dozen villages across Pakistan’s Punjab province, said India’s Tribune.

RECORD TEMPERATURE: Japan recorded its hottest day on record as temperatures reached 41.2C in southwest Tokyo, Al Jazeera reported. There were 16 heat-related deaths and more than 10,800 people were hospitalised with heatstroke last week, the outlet said. Meanwhile, the Iraqi government issued an official holiday in seven of its provinces as temperatures topped 50C, said Gulf News.

‘MILLIONS’ INSIDE: Temperatures soaring in the US have led to “millions” of Americans being warned to stay inside as some areas reach 48.8C, noted Newsweek. Heat warnings and advisories have been issued by the National Weather Service, according to the outlet.

Around the world

  • ENERGY PLEDGE: The European Union has pledged to buy $750bn of energy from the US in exchange for a lower tariff rate under its trade deal with Trump. “Significant purchases” of US oil, liquified natural gas and nuclear fuel to replace Russian fossil fuels are included in the deal, CNBC reported. The Financial Times quoted energy experts saying the deal is a “pie in the sky” given that “US fossil fuel supplies [in 2024] to the bloc accounted for just $75bn”.
  • COP30 COSTS: The UN held an “urgent meeting” over “sky-high” accommodation costs ahead of the COP30 climate summit in Brazil, Reuters reported. Meanwhile, the last US climate negotiators have been fired by the Trump administration, leaving the nation with “no official presence” at the summit, said CNN.
  • ‘MELTING RAPIDLY’: Glaciers in Turkey’s southeast are melting rapidly due to rising global temperatures “amid human-caused climate change”, Al Jazeera reported.
  • ‘SEWAGE CRISIS’: The US and Mexico have signed a deal to end the Tijuana “sewage crisis”, committing to update outdated wastewater infrastructure to handle higher flows triggered by worse flooding, said Inside Climate News.
  • RENEWABLE ENERGY: Australia’s government has pledged to “substantially increase” its renewable energy underwriting scheme following concerns the nation will struggle to meet its 2030 power target, noted the Guardian. Meanwhile, New Zealand’s government has voted to resume gas and oil drilling despite an “outcry” from the opposition and environmental groups, reported the New Zealand Herald.
  • ‘UNHELPFUL TUSSEL’: UN climate chief Simon Stiell paid a visit to Australia and urged the nation and Turkey to resolve their “long-running tussle” over who will host the COP31 summit, calling the delay “unhelpful and unnecessary”, Reuters reported.

66.8 million

The hectares of intact tropical forest that overlaps with oil blocks in the Democratic Republic of Congo, according to Earth Insight.


Latest climate research

  • Climate change could make ‘droughts’ for wind power 15% longer | Carbon Brief
  • A study of urban construction workers in Taiwan found that heat stress imposes “substantial economic burden” and results in productivity losses in the range of 29-41% | Nature Cities
  • Drought will increasingly contribute to the collapse of many bird species that live in highly arid regions of the US | Biological Conservation

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

Captured

Line chart show that 2025 is on track to be second or third warmest year on record

New analysis by Carbon Brief this week revealed that 2025 is on track to be the second or third hottest year on record. The chart above draws on data from five different research groups that report global surface temperature records to illustrate how 2025 saw the second-hottest first half of the year on record.

Spotlight

‘Thirst’ exhibition maps the water crisis

This week, Carbon Brief visits a London exhibition exploring the world’s worsening water crisis.

Intricate ink drawings on cotton paper explore interconnected issues in Nepal.

Global warming has melted glaciers in the region, causing flooding and infectious diseases, displacing human and non-human life.

Yet, through his drawings, Nepalese artist Karan Shrestha has created a mosaic of the Himalayan region that shows water as a signifier of extreme weather and a life-giving source to be shared.

Shrestha’s installation calls into question “views on water as a resource for human gain” and, for artist M’hammed Kilito, oases offer an ecological defence against desertification. Credit: Svetlana Onye
Shrestha’s installation calls into question “views on water as a resource for human gain” and, for artist M’hammed Kilito, oases offer an ecological defence against desertification. Credit: Svetlana Onye

His piece, “Water-giver, memory-keeper and the shifting forces”, is displayed at the Wellcome Collection for its “Thirst: In Search of Freshwater” exhibition.

Brought together by Wellcome curator and lecturer Janice Li, it features 125 objects that showcase the impact of climate change on water and its role in shaping health and ecosystems.

Li’s research into the etymology of “thirst” unravelled a global interpretation of water, reflecting the exhibition’s geographical breadth. She told Carbon Brief:

“Humans have faced really brutal and critical environmental crises and have, through a really deep innate knowledge of their own specific land, been able to devise monumental infrastructure to combat the crises they face.”

Just before Shrestha’s art in the exhibition are photographs taken by M’hammed Kilito.

In one picture, Kilito’s guide, Mustapha, looks into a dried-up well in a Moroccan oasis.

Climate change and human activities have resulted in the loss of two-thirds of oases in the country, according to information displayed at the exhibition.

Speaking about the photograph, Kilito told the Guardian that it looked like Mustapha was “praying for the return of something essential: water”.

Water adopts multiple faces in the exhibition: a vital yet scarce resource in certain pieces, a spiritual entity in others – and a destructive force.

Nothing makes the latter as clear as Deluge by photojournalist Gideon Mendel. Five screens display footage of the aftermath of severe floods around the world, captured by Mendel over 17 years.

Mendel’s installation captures flood victims' “dignity and resilience” as they stand in the liquid landscape. Credit: Svetlana Onye
Mendel’s installation captures flood victims’ “dignity and resilience” as they stand in the liquid landscape. Credit: Svetlana Onye

Li told Carbon Brief:

“[Gideon] told me that, in the last two years, there’s always been a flood of that magnitude happening somewhere. He didn’t imagine that one day it would get to a point where he would have to choose which one to go to.”

Next to “Deluge” is a dome-like space where visitors can sit on bean bags and listen to glaciers melting in the Himalayas.

Though the exhibition confronts global water challenges, Li hopes it also reminds visitors of the resource’s beauty:

“Quite a few people told me they sit in the listening room for half an hour, really enjoying themselves and then guilt hits them because they’ve forgotten they’re listening to melting ice. But, this is the beauty of art, and a lot of beauty has come out of decay, destruction and deterioration because it also, sometimes, signals rebirth.”

Watch, read, listen

YAK HERDERS STRUGGLE: The Associated Press featured the stories of yak herders in India’s Himalayan mountains as climate change threatens their way of life.

PILOT ANXIETY: A Guardian documentary followed two airline pilots grappling with the climate impacts of their jobs.
‘IS DECARBONISATION DEAD?’: New York Times columnist Ezra Klein invited climate experts onto his podcast to discuss the future of renewable energy in the US.

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 1 August 2025: Trump targets ‘endangerment finding’; Floods and heatwaves; ‘Thirst’ exhibition appeared first on Carbon Brief.

DeBriefed 1 August 2025: Trump targets ‘endangerment finding’; Floods and heatwaves; ‘Thirst’ exhibition

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Proposal for ‘Hyperscale’ data centre in remote Northern Territory demonstrates need for urgent moratorium

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SYDNEY, Wednesday 1 July 2026 — The proposal for the ‘Project Ares’ data centre in remote Northern Territory, which would be powered by off-grid gas and renewables, has prompted renewed calls from Greenpeace for an urgent moratorium, citing serious concerns about emissions and environmental harm.

The application for the project under the EPBC Act reveals the gas-fired generation for the project would be approximately 1,038MW at full build-out, which would more than double the NT’s current gas-fired generating capacity.

A recent report by Greenpeace Australia Pacific and independent expert Ketan Joshi, Energy Vampires: the AI data centres draining Australia, revealed how the frenzied rollout of AI data centres in Australia is set to derail the renewable energy transition, entrench gas and turbocharge climate pollution.

Solaye Snider, Campaigner at Greenpeace Australia Pacific, said: “Proposals like Project Ares, which would have significant off-grid gas powered generation and emissions, should not be moving along while there are still zero binding regulations to limit the impacts of AI data centres on our communities and environment.

“This hyperscale project proposes massive new off-grid gas infrastructure, making a mockery of the Federal Government’s unenforceable ‘expectations’ that data centres will cover their own power use with renewables. Communities will pay the price for the data centre industry’s endless hunger for energy at any cost.

“This proposal also raises serious questions about where this new gas would come from. Could it come from fracking the Beetaloo? Communities deserve to have the full picture before this project is approved.

“The Australian Government is asleep at the wheel when it comes to the rapid roll-out of AI data centres. We need an urgent moratorium on the construction and approval of new data centres, so our government can take appropriate time to legislate the regulations and safeguards we so desperately need.”

-ENDS-

Media contact

Lucy Keller on 0491 135 308 or lucy.keller@greenpeace.org

Proposal for ‘Hyperscale’ data centre in remote Northern Territory demonstrates need for urgent moratorium

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Can giant batteries unlock Africa’s green industrial future?

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When Tropical Storm Ana made landfall in Malawi in 2022, it hit the landlocked country’s electricity system hard, destroying a third of its hydropower capacity and causing nationwide system shutdowns.

Even before the storm, Malawi’s power supply – generated mostly from renewables including solar and hydro – had been unreliable for many years, suffering from persistent outages.

The Malawian government is now hoping to improve the stability of its grid power with the construction of a battery energy storage system (BESS) in its capital that will charge up with surplus electricity generated when the sun is shining and hydropower dams are running, and release it when needed.

More than 80% of Malawi’s electricity comes from renewables and the country has been expanding capacity by adding more solar power while decommissioning 78 megawatts (MW) of diesel generation. But climatic impacts such as cyclones disrupt the grid and threaten to reverse energy transition gains.

West Africa’s first lithium mine awaits go-ahead as Ghana seeks better deal

To ensure a more stable supply, Malawi is building the 20 MW/30 megawatt hour (MWh) battery storage system in Lilongwe with support from the Global Energy Alliance (GEA), under Mission 300 – an initiative led by development banks and their partners to connect 300 million Africans to electricity by 2030.

The project in Malawi aims to stabilise the country’s grid, smooth its intermittent power supply, and reduce its reliance on diesel generators, as well as averting about 10,000 tonnes of carbon emissions per year.

Battery energy storage systems act like giant power banks, absorbing clean electricity during periods of lower demand and releasing it for use when demand is high or generation drops. A typical BESS includes battery packs, inverters that allow electricity to flow between the batteries and the grid, transformers, and cooling and safety systems.

Damola Omole, director of the ‘Grids of the Future, Africa’ programme at the GEA, a philanthropic organisation, said BESS offers the “flexibility needed to smoothly integrate high levels of variable renewables” into the power grid. In doing so, it can reduce reliance on expensive diesel generation and protect consumers and industries from rising energy costs, he added.

Can BESS drive Africa’s industrialisation?

As calls to develop local green industries grow louder in Africa, Omole said there is a need to prioritise upgrading national grids with BESS so they can “transmit reliable, cost-reflective power directly to commercial clusters”.

While financiers previously doubted that intermittent solar and wind could meet the needs of industrial production, utility-scale BESS has demonstrated that renewables can deliver “predictable, steady output just like traditional fossil-fuel baseload power”, he added.

An electrical power engineer performs preventative maintenance using a digital voltmeter to monitor battery charge efficiency. (Photo: Nitat Termmee/ Getty Images)

In recent years, African leaders, including William Ruto of Kenya, Felix Tshisekedi of the Democratic Republic of Congo (DRC) and Emmerson Mnangagwa of Zimbabwe, have called for the continent to use the energy transition to drive green industrialisation and create value from its resources at home.

At a mining investment conference in Nairobi in April, Ruto said Africa had stayed at the bottom of the value chain for too long but would now collaborate to process its minerals within the continent. “We will refine them here and we will manufacture them here,” he told African ministers and business executives.

Kenya seeks regional coordination to build African mineral value chains

However, deploying energy at scale to advance this industrial ambition has long been a problem, while about 600 million Africans still lack access to electricity. BESS could therefore become a critical technology in the continent’s development drive, experts say.

Michael Iwu, West Africa business development manager at Empower New Energy, which finances and co-develops renewable energy, said BESS is challenging the narrative that solar and wind power alone cannot provide enough reliable electricity to run factories and other energy-intensive industries. Modern battery systems can now support business operations for several hours, helping maintain production during grid outages, he added.

For GEA’s Omole, the key question has shifted to how quickly countries can build the battery storage, grid infrastructure and market frameworks needed to unlock the potential of renewables.

BESS to help renewables displace fossil fuels

While BESS is still in its initial stages of deployment in Africa, interest is growing as countries look for ways to make renewable energy more reliable.

South Africa is leading with the largest and first of its kind utility-scale BESS on the continent. With the capacity to discharge up to five uninterrupted hours of power, the system is keeping homes and businesses running in Worcester, a southwestern town of more than 100,000 people.

Egypt is also investing heavily in battery storage. In 2025, the country launched its first utility-scale BESS, a 300-MWh facility integrated with a 500 MW solar plant in the southern city of Aswan. It has also committed more than $1 billion to strengthen its electricity grid and update regulation to support battery storage projects.

Africa needs more than export bans to cash in on critical minerals, experts say

Falling battery prices are helping drive the rapid deployment of energy storage. According to BloombergNEF, battery packs for stationary storage (used in BESS) cost an average of $70 per kilowatt-hour in 2025, down 45% from 2024.

Soon the role of BESS in supporting the grid integration of wind and solar could reduce reliance on fossil fuels and help the world meet ambitious climate goals, according to a GEA report released in April.

Stephen Nicholls, director of South-Africa based energy think-tank African Energy Futures, said the rapid pace of technological development and the falling costs of BESS are attracting growing attention.

He said improvements in storage duration could further strengthen the role of renewables in industrial power systems. While most commercial and utility-scale battery systems currently provide around four to eight hours of storage, Nicholls said researchers are developing units capable of storing electricity for extended periods.

“The cheaper the storage and the longer the storage, the more [BESS] will replace fossil fuels like gas,” he added.

Workers are busy on a product at a Polarium energy-storage facility, where they make energy storage and optimization solutions, built on lithium-ion battery technology for businesses within telecom, commercial and industrial facilities across the world, in Cape Town, South Africa, April 5, 2023. (Photo: REUTERS/Esa Alexander)

Workers are busy on a product at a Polarium energy-storage facility, where they make energy storage and optimization solutions, built on lithium-ion battery technology for businesses within telecom, commercial and industrial facilities across the world, in Cape Town, South Africa, April 5, 2023. (Photo: REUTERS/Esa Alexander)

Limited awareness and data

However, significant obstacles to BESS deployment still stand in the way of its massive potential. Iwu of Empower New Energy said limited awareness of utility-scale BESS, as well as concerns about financing and a lack of long-term performance data continue to slow investment across Africa. 

Governments and developers need to build more pilot projects and demonstration sites to generate evidence of the technology’s value and benefits and boost confidence among investors and policymakers, he added. To scale BESS, we need to “keep amassing this [evidence] data and keep talking about it and exploring it,” Iwu said.

Two to tango: How governments can unlock private investment for national climate goals

To help address those barriers, Omole said a BESS Consortium under the Global Energy Alliance is working with governments, development banks and other technical partners to de-risk the sector for private financiers by generating evidence from early projects, mobilising public finance to attract private capital, and introducing policies that make battery storage commercially viable.

“This coordinated action helps African nations bypass legacy infrastructure constraints, integrate massive volumes of clean energy, and secure the reliable power required for large-scale industrialisation,” Omole explained.

The post Can giant batteries unlock Africa’s green industrial future? appeared first on Climate Home News.

Can giant batteries unlock Africa’s green industrial future?

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With extreme heat now a public health crisis, local data can save lives

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Eric Mackres is senior manager of urban analytics for the WRI Ross Center for Sustainable Cities and attended London Climate Action Week during the June 2026 heatwave. Usama Bilal is an associate professor of epidemiology and co-director of the Urban Health Collaborative at Drexel University.

As thousands gathered in London for one of the year’s largest climate gatherings last week, Western Europe faced its most severe heatwave ever recorded. The irony was not lost.

Across Europe, over a dozen countries issued urgent heat warnings and Spain registered significant deaths. In London, where air conditioning is rare in buildings and on trains and buses, temperatures soared past 36 degrees Celsius (97F) and schools closed early. The mayor announced the city’s first heat action plan – an important step.

Extreme heat is now a public health crisis for many of the world’s cities, as the urban heat island effect intensifies dangerous temperatures – and it’s growing worse. Around 500,000 people die from extreme heat every year. As global temperatures rise, and with a severe El Niño getting underway, even more people will die and be hospitalised unless cities act soon.

But most cities are still taking a far too one-sized-fits-all approach to tackling heat, looking only at temperatures and not its local effects on people and their health.

People experience heat differently

How extreme heat affects people’s health can vary widely across a country and city, depending on their environment and demographics. Cities can save far more lives and prevent more hospitalisations by taking a tailored approach, using data to understand who’s most vulnerable and directing solutions toward them.

The good news: better data now exists that enable cities to pinpoint who’s most at risk. And that data can inform customised adaptation strategies to save lives. Indeed, the future of cities will hinge on their ability to deliver solutions to extreme heat tailored to at-risk people and neighborhoods.

Comment: Climate adaptation in Africa needs investment, not imported solutions

First, cities should start by measuring heat’s risks to people’s health locally. Our work in Brazil and across Latin America shows big differences in what temperatures are dangerous and how quickly risks escalate at higher temperatures. These variations exist between cities, between demographic groups and between neighbourhoods.

But it’s not as simple as finding the hottest places. In temperate Porto Alegre, in southern Brazil, a person’s risk of death increases by 25% at temperatures of 27 degrees Celsius (81F). In tropical Teresina, in northern Brazil, which is hot year-round, the same temperature does not elevate the risk of death. At 32 degrees Celsius (90F), a person’s risk of death increases by a milder 10%.

These differences also exist within cities where the climate is the same. Elderly people, the very young, lower-income communities and those without air-conditioning and shaded green spaces are all more likely to get sick, be hospitalised, or die from heat. Areas with more trees and green spaces usually have lower temperatures, and therefore lower impacts of heat.

Targeted heat alerts

Second, cities can use this data to develop early warning systems and outreach campaigns that give people more targeted heat alerts. Research in the UK found that the elderly, despite being among the most at-risk, often were unable to heed warnings during the 2022 heatwave. Well-designed heat warning systems and city responses strengthen people’s trust in health services. They can change people’s behaviours and better prepare municipal services, helping reduce illness, hospital visits and deaths.

Rio de Janeiro adopted a heat alert system in 2024 with five alert levels based on past heatwaves’ impacts on health and forecasts of when temperature and humidity will hit those dangerous levels again. The alert levels activate services like cooling centres, extra public drinking water, and changes to outdoor events. When a heatwave struck during Carnival in 2025, the city was able to deploy resources to protect and warn people while still allowing events to go on.

WHO issues new guidance on heat-health action plans, as El Niño sets in

Finally, cities should use local heat data to target cooling solutions to where they can help people the most. Solutions like tree cover, shade structures and cool roofs lower temperatures and can provide targeted relief for the most vulnerable people, like outdoor workers and those who travel by foot, bike or public transit.

In Florianópolis, Brazil, we helped the local government use heat impact modeling to design a green corridor and urban forestry project that will reduce pedestrians’ heat stress up to 7 degrees C. In Hermosillo, Mexico, our researchers worked with the city and found that certain neighbourhoods could feel up to 14 degrees C hotter than the shaded city center. A park is now under construction that will bring better shade and heat relief to one of the city’s most at-risk areas.

A modular street shade structure on display during an event at New York Climate Action Week on Governors Island, NYC in September 2025. (Photo: Megan Rowling)

A modular street shade structure on display during an event at New York Climate Action Week on Governors Island, NYC in September 2025. (Photo: Megan Rowling)

Connecting health and climate planning

Momentum to address extreme heat in cities is growing, from both national and local governments. At last year’s UN climate summit in Brazil, the Belém Health Action Plan saw 30 national health ministries commit to build climate-resilient health systems based on local data and evidence-based policies.

And over 160 local governments joined the Beat the Heat initiative, committing to develop urban heat action plans and deliver passive cooling projects to reduce health risks.

But there’s still a disconnect between health, urban and climate officials. Only 23% of World Meteorological Organization member countries integrate weather information into health surveillance systems. Heat-health impact models, though increasingly easy to scale, are not yet built for every city. Some cities still need to collect local data for specific demographics and neighbourhoods – and many need support.

National and local governments will need to partner on this tailored approach. It will require integrating local heat and health data into public health systems, city planning, infrastructure, and disaster preparedness.

We have the data to know who will be most impacted by extreme heat when – and the solutions to keep people alive and out of the hospital. It’s time for governments to use them.

The post With extreme heat now a public health crisis, local data can save lives appeared first on Climate Home News.

With extreme heat now a public health crisis, local data can save lives

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