Welcome to Carbon Brief’s DeBriefed.
An essential guide to the week’s key developments relating to climate change.
Global heatwave
SOUTH ASIA: Extended and severe heatwaves that continue to grip 50% of northwest India have claimed at least 110 lives and caused 40,000 to suffer from suspected heatstroke, the Hindustan Times reported. Delhi recorded its highest ever minimum temperature in a 55- year record this week, when night-time temperatures did not drop below 35.2C, the Hindu reported. Reuters reported that a senior government official said “Indian cities have become heat traps” due to unbalanced urban growth reducing water availability.
EAST ASIA: Meanwhile, state-run newspaper China Daily reported that the nation is “experiencing more frequent and intense heatwaves due to global warming”, according to China’s National Climate Centre. It added that the average heatwave starting date has advanced by 2.5 days per decade. The Hong Kong-based South China Morning Post reported that extreme weather has continued in China this week, including deadly torrential rain and drought conditions.
DEADLY PILGRIMAGE: In the Middle East, more than 1,000 hajj pilgrims have reportedly died amid scorching heat in the holy city of Mecca in Saudi Arabia, Sky News reported. Agence France-Presse said that temperatures reached 51.8C in Mecca as around 1.8 million people took part in the “days-long, mostly outdoor” pilgrimage. It added that the death toll is expected to rise further as many continue to search for family members.
US FURNACE: Tens of millions of people in the US were under dangerous heat warnings this week as some cities faced record-breaking temperatures, the Associated Press reported. The Guardian reported that about 80% of the country’s population are experiencing “a kind of heatwave not seen in decades”, which brought prolonged periods of temperatures above 32.2C, “under a weather phenomenon known as a heat dome”.
‘BRUTAL’ EUROPE: After registering Europe’s highest recorded temperature of 48.8C in 2021, Sicily is again having to turn away tourists as “brutal heatwaves” have led to crops dying and farm animals facing slaughter, reported the Times. Elsewhere in Europe, a wildfire near Athens, Greece forced dozens to flee their homes, reported Reuters. Officials said the fire was the result of arson and spread quickly in hot, dry conditions, the newswire added.
- G7 DROPPED: The G7 group of major economies has pledged to speed up their transition away from fossil fuels at a summit in Italy, Reuters reported. It added that activists were unhappy at the pace of progress.
- RECORD RENEWABLES: Wind and solar combined added more new energy to the global mix than any other source for the first time in history in 2023, according to Carbon Brief analysis of newly released data.
- PEAKING CHINA: China has reduced power from fossil fuels and boosted solar and hydro, “feeding hopes that the world’s biggest polluter may have peaked emissions years before its own deadline”, Bloomberg reported. Carbon Brief analysis in May found China may have peaked its emissions in 2023.
- CONFLICT DAMAGE: A UN report found that Israel’s assault on Gaza has caused environmental damage, “deeply harming people’s health, food security and Gaza’s resilience”, according to Reuters.
- NATURE WIN: After months of stagnation, the EU’s nature restoration law was voted through by ministers at the EU council, the Financial Times reported.
- STRANDED BY SLIDES: Al Jazeera reported that landslides triggered by heavy rain have left hundreds of thousands of people stranded and at least 15 dead in India and Bangladesh.
The amount of climate finance developing countries at Bonn want developed countries to provide to them every year, according to Climate Home News.
- New research in Environmental Research Letters suggested that the Arctic will be “ice-free” – that is, where sea ice extent drops below one million square kilometres – at the end of summer when global warming reaches between 1.5C and 2.2C above pre-industrial levels.
- Ocean-based carbon dioxide removal techniques such as ocean alkalinity enhancement have been “overlooked”, a research paper in Environmental Research Letters argued.
- The extreme heat that hit southwestern US, Mexico and Central America from May to June this year was 35 times more likely and 1.4C hotter due to climate change, new analysis by the World Weather Attribution network found.
(For more, see Carbon Brief’s in-depth daily summaries of the top climate news stories on Monday, Tuesday, Wednesday, Thursday and Friday.)
New Carbon Brief analysis by Dr Simon Evans revealed that the UK’s energy bills were £22bn higher over the past decade than they would have been if successive Conservative governments had not cut the “green crap” by rolling back climate policies for areas such as insulating homes, new home building standards and onshore wind and solar growth. The chart above shows how lack of progress on various climate measures has added to UK energy bills from 2015-2024. The cutting back on green measures has also raised net gas imports by a third, making the UK more reliant on gas imports and leaving customers more exposed to high gas prices, the analysis said. Carbon Brief is continuing to track where UK parties stand on climate change and energy ahead of the country’s general election.
Can beavers help the UK adapt to climate change?
This week, Carbon Brief looks at the evidence on the potential pros and pitfalls of reintroducing beavers to help deal with rising climate risks in the UK.
From Narnia to the Ice Age franchise, beavers have a spot as a charismatic, comical and – until recent years – somewhat mythical animal in British popular culture.
Beavers were hunted to extinction in Britain 400 years ago, and to near extinction in Europe. Memory of their presence in Britain survives in place names, such as Beverley Brook in London.
Given their reputation, it is perhaps surprising that they have also been called “climate heroes”, “ecosystem engineers” and, more recently, “heatwave heroes”.
Such labels come from beavers’ ability to alter the landscapes around them, offering benefits such as lowering flood risk or providing new habitats for biodiversity.
It is these benefits that have seen beavers reintroduced to some areas of England and Scotland.
Climate and biodiversity benefits
Beavers are a keystone species, which means they have an inordinately large impact on their natural environment, with the ability to define their ecosystem.
They use their huge front teeth to fell trees, building dams and lodges,which subsequently hold back huge volumes of water to create a wetland habitat.
The animals do this to create their ideal environment – one with deep water so they can hide from predators. However, they also inadvertently create an oasis for a variety of wildlife.
Earlier this week, the Guardian reported that, after living in the wild for 15 years in Scotland, beavers create the “perfect conditions” for endangered native water voles to flourish.
Prof Richard Brazier, director of the Centre for Resilience in Environment, Water and Waste at the University of Exeter, said the main climate benefits beavers can provide were enhancing water and carbon storage. He told Carbon Brief:
“Beaver ponds store a lot of carbon, nitrogen and phosphorus. Beavers coppice [chop down] species like willow. When they regrow, it enhances carbon storage in the landscape.”
Climate change is making many types of extreme weather events, including droughts, more likely and more intense.
Beaver wetlands are known to remain oases in otherwise cracked, dry land. The water stored in beaver ponds slowly seeps into the surrounding soil during dry periods, keeping the area green.
In the US, research found that wetland habitats created by beavers are resistant to wildfires because the area is simply too wet to burn.
Perhaps the most well-known link between beavers and climate adaptation is their alleviation of flood risks.
In March, the UK government’s Environment Agency reported that, after five years of beaver activity in an enclosed area, the impact of flooding was reduced in Spains Hall Estate, Essex.
In Devon, scientists last month concluded a 10-year study finding that beavers are “having a positive impact on flood and drought alleviation” by storing 24m litres of water and reducing storm flows by 30% during heavy rainfall, keeping downstream homes safer from floods.
Human-animal conflict
Other studies on beavers have warned that friction between the animals and adjacent landowners must be a central consideration for successful reintroduction.
Under certain circumstances, their natural engineering can interfere with human infrastructure and farming.
Some farmers are concerned that beaver activity causes flooding and damage to crops. Others worry that tree felling could cause damage to houses nearby.
Occasionally, beaver burrows can collapse, and damage property or machinery nearby.
Brazier told Carbon Brief that “tensions can arise” when humans “try to resist the natural instinct of the beaver to create deep water pools”. He added:
“If there are downsides, these relate to the ways in which, by building dams, beavers put water back on floodplains, when humans tend to want to remove this water, such as for agriculture. But these low-lying landscapes are floodplains, they are meant to be underwater periodically, and indeed, whether beavers are reintroduced or not, they will be more inundated by flooding in the future, under climate change scenarios.”
Beaver releases
Despite opposition from some groups, momentum has been gradually building for beavers’ return to the wild.
It is still illegal to reintroduce beavers in Britain without a licence.
In 2009, illegal releases were made in Tayside, Scotland and Devon, England. It is unknown where the beavers came from.
The first licence for beaver reintroduction was given for an enclosed area in Ham Fen in Kent in 2001.
In 2009, the first licensed reintroduction of beavers into the wild occurred in Knapdale, Scotland, with the animals shipped in from Norway.
In 2021, the government allowed the illegally released beavers in Devon to remain wild.
Beavers are also being reintroduced into cities. They were reintroduced in Enfield, north London in 2022 – and it was there that the first kit was born in London last summer.
Beavers were declared a native species in 2016 in Scotland and in 2022 in England.
However, the UK government is yet to introduce a national strategy for beaver reintroduction – “missing a huge opportunity to deliver profound benefits”, according to Brazier.
MOVIE MAGIC: Showing in UK and Irish cinemas, Wilding tells the story of a couple who in 2001 handed over their 4,000-year-old estate and struggling farm to nature.
STORY TIME: With the help of woolly mammoths and dinosaurs, Christine Shearer and illustrator Kaz Clarke have published “The Everywhere Atom: A Journey Through The Carbon Cycle and Climate Change”, telling the story of the carbon cycle to children.
NATURE VOTE: With the UK general election two weeks away, Carbon Brief’s Dr Simon Evans spoke to Radio 4’s Rare Earth about how climate and the environment feature in the main political parties’ manifestos.
- UN Environment Programme, project coordinator | Salary: Unknown. Location: Dominica
- West of England Combined Authority, south west net-zero hub programme manager | Salary: £60,204-£65,858. Location: Bristol, UK
- HM Treasury, policy adviser, green finance | Salary: £39,500-£48,720. Location: UK
- University of Cambridge, Climate Governance Initiative programme director. Salary: £61,823-£63,029. Location: Cambridge, UK
DeBriefed is edited by Daisy Dunne. Please send any tips or feedback to [email protected].
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