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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

Pakistan and India floods

EXTREME WEATHER: Heavy flooding forced half a million people to evacuate their homes in just 24 hours in Pakistan’s Punjab this week, the Associated Press reported. It brings the total number of people displaced since last month to 1.8 million, the newswire said. According to Arab News, at least 41 people have died as a result of the flooding since last week. The flooding has also destroyed thousands of acres of crops in Punjab, a province that accounts for 68% of Pakistan’s total annual food grain production, Bloomberg reported.

CROSS-BORDER EVENT: Meanwhile, in Indian Punjab, “at least 30 people have died and more than 354,000 have been affected” by flooding, BBC News reported. India also warned Pakistan about more cross-border flooding for the second time in as many weeks, as both countries reeled from monsoon rains, the Associated Press reported.

UK dividing lines

NEW FACE: Zack Polanski has been elected as the new leader of the Green Party of England and Wales in a landslide victory, the Financial Times reported. Polanski is an “outspoken campaigner who has argued his party needs to ‘connect with people’s anger’ and become more combative against ‘villains’, including oil major Shell and the ‘super-rich’”, the newspaper said. Polanksi wants to “replace” the ruling Labour party on a platform of “eco-populism”, according to BBC News.

NORTH SEA OIL: Meanwhile, the UK Conservative leader Kemi Badenoch pledged to drill “all” of the remaining oil and gas in the North Sea if elected, BBC News reported. [The Conservatives are polling third, at 17%.] In response to the speech, the Daily Telegraph‘s world economy editor Ambrose Evans-Pritchard argued that Badenoch’s plan would not “raise this country’s long-term output of oil and gas by more than homeopathic amounts” nor “move the needle on UK energy prices” (more below).

Around the world

  • HIGHER AMBITIONS: The UN urged countries to set new, more ambitious national climate plans this month, ahead of this year’s COP30 summit in Belém, Brazil, Reuters reported.
  • ‘JUNK SCIENCE’: A group of more than 85 climate scientists released a “scathing review” of the Trump administration’s misleading climate report, DeSmog reported.
  • FOSSIL ENERGY: Russia said China had agreed to a massive new pipeline capable of importing as much as 50bn cubic metres of gas a year, the Financial Times reported.
  • US PRESSURE: Reuters reported that the US is pressuring other countries to reject a UN deal on cutting emissions from shipping by threatening them with tariffs, visa restrictions and port levies.
  • SWELTERING HEAT: Authorities in Japan and South Korea said 2025 was the hottest summer in their countries since records began, Al Jazeera reported.
  • MITIGATION WORK: According to Bloomberg, Zimbabwe has published draft regulations to establish a National Climate Fund. The fund will finance projects “aimed at mitigating the impact of climate change and respond[ing] to emergencies”.

20%

The amount by which clean-energy production has surged in India this year, according to Reuters, citing data from the thinktank Ember.


Latest climate research

  • “Extreme cold surges” have “robustly weakened in middle-to-high latitude continents during autumn and winter” due to climate change, according to a study in Nature Communications.
  • A study published in npj Climate Action found that exposing people to moral appeals results in overall carbon footprint reduction and increased participation in civic and political climate action, regardless of ideological affiliation.
  • The World Bank’s increase in climate finance spending since the Paris Agreement has been driven by projects with “low climate components”, according to a study in Climatic Change.

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

Captured

Stacked bar chart showing that North Sea gas is not 'four times cleaner' than imported LNG

A claim that gas produced in the North Sea emits “four times” less CO2 than imported liquified natural gas (LNG) featured prominently in both the Guardian and the Daily Telegraph this week, following Badenoch’s pledge to drill “all” the remaining oil and gas in the UK. However, this figure is highly misleading. It only refers to the emissions that come from the process of extracting and delivering the gas, which are much smaller than those from burning it. When both extraction and burning of the gas are taken into account, CO2 emissions from UK production are only around 15% lower than those from LNG imports, according to a new factcheck from Carbon Brief.

Spotlight

A man-made lake threatened by climate change

This week, Carbon Brief reports on how climate change is impacting the sustainability of a scenic nature reserve in the southern US.

In 1941, as World War 2 thickened, the US Congress approved a plan to construct a reservoir storage project on the Hiwassee River, a water body that cuts across the states of Georgia, North Carolina and Tennessee.

The dam, which came to be known as Chatuge after an 18th-century Cherokee village, was originally built for power generation purposes. However, after it was completed, it became more than a hydroelectric project.

In May 1942, the Towns County Lions Club started stocking fish in the newly created Lake Chatuge. In 1944, Clay County leased a tract of land for a public park.

Today, the park offers “scenic mountain views” and “panoramic views” of Lake Chatuge. The lake is also home to rare, endangered plant species and is an important source of drinking water.

However, Lake Chatuge’s future has been plunged into uncertainty after the Tennessee Valley Authority proposed a plan to repair the dam’s spillway, which could involve draining the lake’s water levels by 20 feet (6m) for up to eight years.

The TVA’s action is largely forward-thinking. While the dam and its spillway are in good condition, the public utility company is wary of extreme weather events made more likely by climate change.

In September 2024, Hurricane Helene tore through parts of Georgia and North Carolina, leaving more than 128 people dead across the US and uprooting communities in its wake. One analysis estimated that 44% of the economic damage from the storm can be attributed to human-caused climate change.

Image taken from Bell Mountain showing a view of Lake Chatuge in the distance, with trees and grass in the foreground.

The Lake Chatuge area was largely spared, but officials worry that the next extreme weather event may not be far off.

“It’s the kind of event – the unusual storm event that can happen, that’s pretty rare – is what we’re looking out for,” a TVA project manager has said.

Meanwhile, aside from the imminent repairs made more likely by the increased possibility of extreme weather events, Lake Chatuge is also battling a parrot feather infestation, a phenomenon involving the spread of an invasive plant that has been linked to global warming in other parts of the US.

Saving Lake Chatuge

The threat posed by climate change to Lake Chatuge is not an isolated case. A July 2025 report by researchers at Utah State University found that climate change is affecting the social benefits of dams across the country.

Elsewhere in the world, the impact of extreme weather on ageing dams is wide ranging, including recently heightening tensions between India and Pakistan.

However, community members in the Lake Chatuge area are not giving up easily. A Facebook group dedicated to saving the lake has more than 2,000 members.

“Lake Chatuge is our economy,” Towns County’s sole commissioner, Cliff Bradshaw, told Carbon Brief. He added:

“The main attraction to this area is Lake Chatuge. Without the lake, the county’s tourism would drop, and our economy would suffer greatly – could even drive the county into a depression – as we have a great deal of businesses that rely solely on activities on Lake Chatuge for their customers, such as marinas, party boats and water activity playgrounds. The other businesses in town may not rely on the lake for customers, but do rely on the tourist traffic brought into the area by the lake to drive customers into their place of business.”

According to reporting by the Atlanta-Journal Constitution, visitors have spent up to $100m annually in the area since 2021.

The TVA’s repair work could begin as soon as 2027, but community members are asking both the public utility company and political leaders to help find the least damaging pathway.

Watch, read, listen

SCIENCE CUTS: The Financial Times reported on how the Trump administration has “gutted” the Federal Emergency Management Agency (Fema), throwing into doubt the nation’s ability to respond to extreme weather disasters.

SUSTAINABLE ECONOMICS: In an interview with Le Monde, the French economist Thomas Piketty argued that protecting the planet from climate change requires wealth redistribution.

TWEAKING NATURE: A Havard atmospheric chemist and an Oxford planetary physicist discussed the nuances and subtleties of geoengineering on the podcast Entanglements by Undark.

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 5 September 2025: Pakistan floods hit 1.8m people; UK ‘eco-populism’; How warming threatens a man-made lake appeared first on Carbon Brief.

DeBriefed 5 September 2025: Pakistan floods hit 1.8m people; UK ‘eco-populism’; How warming threatens a man-made lake

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Bolivia’s shift to the right renews ambition to mine vast lithium reserves

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Bolivia’s election of centre-right President-elect Rodrigo Paz Pereira could see the country open its vast lithium resources to foreign investors to bolster its faltering economy – a move that could benefit the US after years of hostility toward Washington, analysts say.

Paz, a senator and the son of a former president, won the country’s election earlier this month, ending two decades of left-wing rule, which constrained foreign investment in the South American nation’s mineral wealth.

The change in government may be welcomed by investors in the US, which is seeking to secure access to minerals that are critical for clean technology and military equipment, to counter China’s supply chain dominance, and has previously raised concerns over Chinese investments in the region’s lithium industry.

Lithium is a key material to manufacture rechargeable batteries for electric vehicles and energy storage.

Bolivia makes up less than 1% of global lithium production despite possessing some of the world’s largest reserves, with an estimated 23 million tonnes, or 20% of the global total.

Paz has pledged to seek overseas partnerships to tap these reserves. But he will have to balance engaging the US with maintaining investment from China and Russia initiated by his predecessors.

“Exactly what he does on this issue will determine his relationship with China and Russia,” said Farit Rojas, a professor at the Higher University of San Andrés in La Paz.

At the same time, the political reset could provide Bolivia with a critical opportunity to set clearer and stricter environmental and social standards for developing its burgeoning lithium sector, analysts told Climate Home News.

Bolivia’s lithium dream

Paz’s election comes at a pivotal moment for the country. It is mired in an economic crisis spurred by runaway inflation caused by a foreign currency shortage, leaving people waiting in long lines for fuel and essentials like cooking oil.

Converting lithium reserves into a profitable export industry would bring much needed dollars into the country.

But doing so would require amending Bolivia’s constitution to allow private firms to extract the mineral. That privilege was restricted to Bolivia’s state-owned companies under the 20-year rule of the Movement for Socialism (MAS), the party formerly led by ex-President Evo Morales.

    Constitutional restrictions and past rejection of foreign investment mean Bolivia’s lithium resources remain largely untapped compared to neighbouring Argentina and Chile, whose deposits are of higher quality.

    A significant share of Bolivia’s deposits also lie beneath the Salar de Uyuni salt flats, a major tourist attraction.

    Paz, whose party does not have a legislative majority, has yet to say whether and how he will amend Bolivia’s constitution. But he has pledged not to “sell out” Salar de Uyuni.

    US, China and Russia: a balancing act

    His first months in office will be watched closely by the Trump administration. Following Paz’s election victory, the US Department of State pledged to work with him on “shared goals of regional and global security, economic prosperity, and growth that will benefit our nations”.

    For the US, this could be an opportunity to break China and Russia’s grip on Bolivia’s lithium reserves, said Pablo Hamilton, a Chilean mining lawyer connecting foreign investors with energy opportunities in Bolivia.

    In 2024, Bolivia’s state-owned Yacimientos de Litio Bolivianos lithium company signed contracts worth a combined $2 billion with Chinese and Russian firms to extract lithium beneath the Salar de Uyuni salt flats. The year prior, it signed a $1.4 billion deal with Chinese battery manufacturing giant CATL to develop its lithium resources.

    AI and satellite data help researchers map world’s transition minerals rush

    But those contracts – which have yet to be approved by Bolivia’s legislature – have been sharply criticised by scientists, Indigenous peoples and local communities because of a lack of transparency over the consultation process, inconsistencies within the contracts and environmental risks. Paz has pledged to review the contracts.

    Cancelling the contracts could cause investors to worry about policy volatility, Hamilton told Climate Home News. But the administration could justify doing so if it can prove allegations of corruption that have swirled around the deals. It could also provide an opportunity to establish stricter mining standards that provide certainty to potential investors.

    Investors “don’t know what to expect”

    “The rules are not clear enough. It’s very concerning that investors don’t know what to expect,” Hamilton said. “This is a great opportunity to [mandate] a free, prior and informed consultation process and environmental impact assessments – really professional ones, not just to tick the box.”

    To attract foreign investment, Paz will likely seek to build public-private partnerships, which will require greater engagement from local actors than in the past, Hamilton said.

    In the area surrounding Salar de Uyuni, Indigenous groups have lost trust in the government, citing the shadowy allocation of mining contracts and saying their communities have not benefited from mining.

    They also worry that additional extraction would deplete the limited freshwater resources they rely on for farming, said Gonzalo Mondaca of environmental organisation Cedib, which works with communities living in the lithium-rich region.

    Efforts to green lithium extraction face scrutiny over water use

    The proposed Chinese and Russian extraction plans would use direct lithium extraction (DLE), a group of technologies that proponents say can help extract more lithium with fewer environmental impacts but which still uses large amounts of water.

    But existing environmental assessments are not sufficient to understand the impact of the technique on the salt flat’s ecosystem, said Mondaca.

    On the campaign trail, Paz also said he would seek to export the magnesium byproducts of lithium extraction to the US and China.

    However, that plan requires a high level of technological development and Bolivia currently lacks the necessary infrastructure, said Mondaca.

    Even if the new president manages to clear constitutional hurdles to liberalise the country’s lithium sector, “there is still a long way to go,” he added.

    The post Bolivia’s shift to the right renews ambition to mine vast lithium reserves appeared first on Climate Home News.

    Bolivia’s shift to the right renews ambition to mine vast lithium reserves

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    10 reasons why we need to act for the Amazon

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    The Amazon isn’t just the world’s greatest rainforest. She has been home to her original people for tens of thousands of years, who have persisted through centuries of colonial incursions to protect their home. At each moment of each day, the Amazon breathes, dances, and sings with an endless variety of plants and animals, many of those we humans have yet to understand. The Amazon is life-giving, irreplaceable and yet profoundly vulnerable.

    Here are 10 fascinating facts to inspire you to take action for the Amazon:

    Aerial View over Amazon RainForest. © Rogério Assis / Greenpeace
    Tapajós river basin, next to Sawré Muybu indigenous land, is home to the Munduruku people, Pará state, Brazil. © Rogério Assis / Greenpeace

    1- The Amazon is the largest rainforest in the world

    Spanning over nine countries in South America, the Amazon is the largest tropical forest on the planet, covering 6.7 million square kilometres. To put it in perspective, she is twice the size of Indiathe largest country in South Asia. The biggest part, around 60%, is in Brazil. After the Amazon, the Congo Basin and Papua host the world’s largest remaining rainforests.

    2- The Amazon is one of the most biodiverse ecosystems on Earth

    The Amazon is home to approximately 10% of all known species of fauna and flora worldwide. From the beautiful hyacinth macaws to fearless jaguars and the amazing pink dolphins, this vibrant ecosystem is teeming with life. In some areas, a single hectare can contain more than 300 tree species, approximately two-thirds of the native tree species in Europe (454), making the Amazon one of the most botanically rich regions on Earth.

    Studies show that the Amazon Basin harbours at least 2,716 species of fish, 427 amphibians, 371 reptiles, 1,300 birds, and 425 mammals. However, the vast majority of its biodiversity lies in her invertebrates, particularly insects, with over 2.5 million species currently known

    Munduruku and Greenpeace Demarcate Indigenous Lands in the Amazon. © Anderson Barbosa / Greenpeace
    Two Munduruku boys walk along a river while holding spears. The Munduruku people have inhabited the Sawré Muybu in the heart of the Amazon, for generations. © Anderson Barbosa / Greenpeace

    3- There are approximately 3 million Indigenous People living in the Amazon

    The Amazon is home to a diverse group of Indigenous Peoples. Over 390 Indigenous Peoples live in the region, along with approximately 137 isolated groups, who have chosen to remain uncontacted.

    In Brazil, about 51.2% of the country’s Indigenous population resides in the Amazon. But the largest tropical forest in the world is also home to traditional communities that have lived in harmony with the forest for generations, such as Rubber Tappers, Ribeirinhos—who inhabit the Amazon’s riverbanks—and Quilombolas, Afro-Brazilian communities descended from enslaved people..

    4- The Amazon is home to over 40 million people

    The Amazon is not just a vast rainforest rich in biodiversity and home to Indigenous People—it is also home to several cities. In Brazil, These include Manaus , an industrial hub with a population of 2.2 million, and Belém , which will host the United Nations Climate Conference (COP30) in November 2025.

    These people’s lives are intrinsically connected to the forest. They depend on her for their food, fresh water, and to regulate the local climate. Smoke from the fires in the Amazon directly impacts the people living in the region, darkening the skies and causing respiratory problems to the population, especially children and elders.

    Scorched Earth in the Capoto-Jarina Indigenous Territory  in the Amazon. © Marizilda Cruppe / Greenpeace
    Indigenous Territories in the Amazon are facing a devastating combination of extreme drought and forest fires, driven by the intensification of climate change and criminal activities from illegal mining and other exploitative actions. © Marizilda Cruppe / Greenpeace

    5- The Amazon is vital for the global climate

    The Amazon is estimated to store about 123 billion tons of carbon, both above and below ground, making her one of Earth’s most crucial “carbon reserves”, vital in the fight against the climate crisis. However, studies show that fire- and deforestation-affected areas of the Amazon are now releasing more CO₂ into the atmosphere than they absorb. This poses a major threat to the global climate. Protecting the Amazon means protecting the future of everyone.

    6- Fires in the Amazon are not natural

    Unlike bushfires in Australia and other parts of the world, fires in the Amazon are not natural. In the Amazon biome, fire is used in the deforestation process to clear the land for agriculture and pasture. The use of fire in the Amazon is often illegal, and so is deforestation. This practice has a major impact on the local biodiversity, the health of the populations living in the region, and to the global climate, as the fires release vast amounts of carbon into the atmosphere.

    Fire Monitoring in the Amazon in Brazil in September, 2021. © Victor Moriyama / Amazônia em Chamas
    Cattle in a ranching area, next to a recently deforested and burnt area, in Candeias do Jamari, Rondônia state.
    © Victor Moriyama / Amazônia em Chamas

    7- Cattle ranching is the leading cause of deforestation in the Amazon

    The expansion of agribusiness in the Amazon is putting more and more pressure on the forest. According to a study, 90% of the deforested areas in the Brazilian Amazon are turned into pasture to produce meat and dairy. This means the food we eat may be linked to deforestation in the Amazon. We must urge our governments to stop buying from forest destroyers and ensure supply chains are free from deforestation, and demand stronger protections for the Amazon.

    8- Illegal gold mining is a major threat to Indigenous Peoples

    Illegal gold mining in Indigenous Lands in Brazil surged by 265% in just five years, between 2018 and 2022. The activity poses a severe threat to the health and the lives of Indigenous People, destroying rivers, contaminating communities with mercury and bringing violence and death to their territories.

    But illegal gold mining doesn’t impact just the forest and Indigenous People. A recent study showed that mercury-contaminated fish are being sold in markets in major Amazonian cities, putting the health of millions at risk.

    Illegal Mining in the Sararé Indigenous Land in the Amazon. © Fabio Bispo / Greenpeace
    The Sararé Indigenous Land, home to the Nambikwara people. Mining continues to expand and make the Nambikwara way of life unviable, ignoring the right of this population to live according to their customs and traditions. © Fabio Bispo / Greenpeace

    9- The Amazon is close to a point of no return

    About 17% of the Amazon has already been deforested, and scientists warn we are getting dangerously close to a ‘point of no return’.

    According to a study, if we lose between 20% and 25% of the Amazon, the forest might lose its ability to generate its own moisture, leading to reduced rainfall, higher temperatures, and a self-reinforcing cycle of drying and degradation.

    As a result, vast areas of the forest could turn into a drier, savanna-like ecosystem, unable to sustain her rich biodiversity. This could have catastrophic consequences for the global climate, local communities, and the planet’s ecological balance.

    10- The most important Climate Conference in the world is happening in the Amazon this year

    COP30, the United Nations Climate Conference, will take place in Belém, the second largest city in the Amazon region, in November 2025. During the conference, representatives from countries all over the world will meet to discuss measures to protect the climate. Across the globe, we are already witnessing and feeling the impacts of the climate crisis. This is our chance to demand our political leaders move beyond words to urgent action. They must stop granting permission and public funds to Earth-destroying industries. Instead, our leaders must respect, pursue, and support real solutions that already exist—solutions that put the forest and her people at the heart of the response. Indigenous guardians of the forest hold true authority, and they must be respected and heard. The moment is now.

    We are the turning point! Join the movement and demand respect for the Amazon.

    10 reasons why we need to act for the Amazon

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    Climate Change

    As the Data Center Boom Ramps Up in the Rural Midwest, What Should Communities Expect?

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    The rapid development will change the Corn Belt in significant, unforeseen ways. Residents are just beginning to grapple with what that means.

    TAZEWELL COUNTY, Ill.—To the untrained eye, Central Illinois is all lush fields of corn and green soybeans shortly before harvest. The wind shuffles through the row crops, and the air is warm and humid and full of insects. The horizon is dotted with power lines, strung together by wire, and the occasional water tower—the only objects that disrupt a vast sky.

    As the Data Center Boom Ramps Up in the Rural Midwest, What Should Communities Expect?

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