Australian tropical rainforest trees switch in world first from carbon sink to emissions source

Researchers say carbon emissions change in Queensland tropical rainforests may have global climate implications

Australian tropical rainforest trees have become the first in the world to switch from being a carbon sink to an emissions source due to increasingly extreme temperatures and drier conditions.

The change, which applies to the trees’ trunks and branches but not the roots system, began about 25 years ago, according to new research published in Nature.

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Watchdog rules Red Tractor exaggerated its environmental standards

The Advertising Standards Authority agrees with River Action that the food safety body’s 2023 advert misled the public

The UK’s advertising watchdog has upheld a complaint that Britain’s biggest farm assurance scheme misled the public in a TV ad about its environmental standards.

The Red Tractor scheme, used by leading supermarkets including Tesco, Asda and Morrisons to assure customers their food meets high standards for welfare, environment, traceability and safety, is the biggest and perhaps best known assurance system in Britain.

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Wednesday briefing: The new, devastating flood risk facing nearly all of Britain

In today’s newsletter: Flooding is predicted to become so bad that some towns may need to be abandoned, and it’s not even campaigners raising the alarm – but insurers

Good morning. For years, whenever I read about parts of Britain being wrecked by flooding, it always felt like something distant – because until your house is flooded, it’s hard to imagine it happening, isn’t it? Not any more.

According to a Guardian investigation, millions more homes across England, Scotland and Wales are at risk of devastating floods. In England alone, the number of properties exposed to flooding is expected to rise by more than a quarter, from 6.3m to 8m. The story gets worse for those in high-risk areas for flash flooding – which is harder to predict and protect against – where the frequency could surge by up to 66% by 2050. The picture is so bleak that, startlingly, some towns may one day have to be abandoned altogether.

Israel-Gaza war | The fragile ceasefire in Gaza faced its first test on Tuesday when Israel said the flow of aid into the devastated Palestinian territory would be cut by half and the crucial Rafah border crossing with Egypt would not open as planned, blaming Hamas for delays in the return of bodies of hostages.

UK child abuse inquiry | Keir Starmer’s national grooming gangs inquiry has stalled amid wrangles over its remit and difficulties in finding a senior legal figure willing to become its chair, the Guardian has been told.

Economics | The global economy has shown “unexpected resilience” to Donald Trump’s tariffs, but the full impact is yet to be felt, the IMF has warned. The forecast for economic growth in the UK has also been modestly increased, from 1.2% to 1.3% this year – though slightly downgraded next year, also to 1.3%.

Madagascar | Andry Rajoelina, the president of Madagascar, has said he fled the country in fear for his life after a military rebellion but did not announce his resignation in a speech broadcast on social media. They were Rajoelina’s first public comments since the a military unit called Capsat turned against his government in an apparent coup.

Music | D’Angelo, the Grammy-winning R&B singer who helped pioneer the sound of neo-soul, has died after a struggle with pancreatic cancer. He was 51.

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Plantwatch: An extraordinary orchid that lives and flowers underground

Botanist trying to conserve highly vulnerable rhizanthella that survives by feeding on nutrients from a fungus

Rhizanthella is an extraordinary orchid that lives its entire life underground. It flowers below ground, has no leaves and survives by feeding on nutrients from a fungus that gets its food from the soil and by connecting with roots of the broom bush, Melaleuca uncinata.

Rhizanthella was an international sensation when it was first discovered by a farmer ploughing a field in Western Australia in 1928. It still remains incredibly difficult to find, usually by searching areas with the right habitat and carefully scraping away soil searching for the blooms buried underneath – tiny reddish flowers wrapped in creamy-pink bracts. The blooms also have a heady scent of vanilla, and may be pollinated by termites or tiny flies.

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Switching 50km/h speed limits to 30km/h would protect cyclists while barely affecting commutes, research finds

One expert says a cyclist hit by a car travelling 50km/h has about a one-in-ten chance of surviving, while at 30km/h it was a nine-in-ten chance

Reducing residential speed limits from 50km/h to 30 km/h would protect cyclists from danger and make riding less stressful while not causing traffic delays for cars, according to new research.

Researchers from RMIT University rated traffic stress levels for every road in greater Melbourne and modelled the effect of lower speed limits on bicycle and car travel.

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Carmakers chose to cheat to sell cars rather than comply with emissions law, ‘dieselgate’ trial told

Mercedes, Ford, Renault, Nissan and Peugeot/Citroën face group action in which damages could exceed £6bn

Car manufacturers decided they would rather cheat to prioritise “customer convenience” and sell cars than comply with the law on deadly pollutants, the first day of the largest group action trial in English legal history has been told.

More than a decade after the original “dieselgate” scandal broke, lawyers representing 1.6 million diesel car owners in the UK argue that manufacturers deliberately installed software to rig emissions tests.

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New Zealand accused of ‘full-blown climate denial’ over cuts to methane reduction targets

Farmers praised the move, but scientists and opposition parties criticised it as ‘weak’ and ‘unambitious’

Environmental campaigners have accused New Zealand’s government of “full-blown climate denial” after it slashed targets for reducing emissions of methane, a potent greenhouse gas that contributes to global warming.

New Zealand’s right-leaning coalition government outlined plans on Sunday to reduce methane emissions by between 14 and 24% by 2050, compared to 2017 levels.

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Energy firms complete UK’s first ‘hydrogen blending’ trial to power grid

A 2% blend of low-carbon gas injected into gas grid to fuel Brigg power station in North Lincolnshire is a UK first

Energy companies have injected green hydrogen into Britain’s gas grid and used the low-carbon gas to generate electricity, in a landmark development for the UK’s climate ambitions.

For the first time in the UK, a 2% blend of green hydrogen was injected into the gas grid and blended with traditional gas to fuel the Brigg power station in North Lincolnshire which generated electricity for the power system.

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Planet’s first catastrophic climate tipping point reached, report says, with coral reefs facing ‘widespread dieback’

Unless global heating is reduced to 1.2C ‘as fast as possible’, warm water coral reefs will not remain ‘at any meaningful scale’, a report by 160 scientists from 23 countries warns

The earth has reached its first catastrophic tipping point linked to greenhouse gas emissions, with warm water coral reefs now facing a long-term decline and risking the livelihoods of hundreds of millions of people, according to a new report.

The report from scientists and conservationists warns the world is also “on the brink” of reaching other tipping points, including the dieback of the Amazon, the collapse of major ocean currents and the loss of ice sheets.

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Australia’s household energy bills will halve by 2050, modelling suggests

Grattan Institute report argues fall in costs will provide federal government room for more action on climate

Australian household energy bills will halve by 2050 as solar panels, batteries and electric cars and appliances become the norm, reducing pressure on the federal government over living costs and creating room for more climate action, a thinktank study suggests.

Modelling by the Grattan Institute finds that cutting greenhouse gas emissions from electricity generation in line with the goal of reaching net zero emissions by 2050 will cut average household energy costs from about $5,800 today to about $3,000.

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Number of wild bee species at risk of extinction in Europe doubles in 10 years

Number of endangered butterfly species also surging amid habitat destruction and global heating, finds study

The number of wild bee species in Europe at risk of extinction has more than doubled over the past decade, while the number of endangered butterfly species has almost doubled.

The jeopardy facing crucial pollinators was revealed by scientific studies for the International Union for Conservation of Nature (IUCN) red list of threatened species, which found that at least 172 bee species out of 1,928 were at risk of extinction in Europe.

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Baby numbats spotted at two wildlife sanctuaries in hopeful sign for one of Australia’s rarest marsupials

Video shows some of the juveniles exploring outside their den at Mallee Cliffs national park in south-western NSW

Baby numbats have been spotted at two wildlife sanctuaries in south-western New South Wales, sparking hope for one of Australia’s rarest marsupials.

Video captured by the Australian Wildlife Conservancy (AWC) shows some of the juveniles exploring outside their den at Mallee Cliffs national park.

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Crocodile made famous by Steve Irwin ‘wrongfully arrested’ and should be returned to wild, traditional owners say

Exclusive: ‘Old Faithful’ was captured after Queensland authorities deemed him ‘a problem crocodile’, but Rinyirru Aboriginal Corporation says the government is mistaken

Traditional owners have called on the Queensland environment minister to return an iconic saltwater crocodile to the wild, arguing his capture was a “wrongful arrest” – but that his case could prove “a landmark” in redefining consultation with First Nations people and the management of crocodiles.

Rinyirru (Lakefield) Aboriginal Corporation chair, Alwyn Lyall, wrote to the environment minister, Andrew Powell, on Friday saying the removal of a crocodile longer than 4 metres, known as “Old Faithful”, from Rinyirru – or Lakefield national park – last month was based on a “flawed and outdated” test of his behaviour and highlighted “a bigger problem in how crocodiles are managed”.

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Grisly recording reveals bat catching, killing and eating robin mid-flight

Before the Spanish study, some scientists had been sceptical about the mammals attacking migratory birds

Bats are generally viewed as harmless, if spooky, creatures of the night. But scientists have revealed a more savage side, after witnessing a greater noctule bat – Europe’s largest bat species – hunting, killing and devouring a robin mid-flight.

The grisly recording reveals the bat as a formidable predator, climbing to 1.2km (4,000ft) before embarking on a breakneck-speed dive in pursuit of its prey. On capture, the bat delivered a lethal bite and subsequent chewing sounds, recorded between echolocation calls, indicated that the bat consumed the bird continuously during flight for 23 minutes without losing altitude.

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Grisly recording reveals bat catching, killing and eating robin mid-flight

Before the Spanish study, some scientists had been sceptical about the mammals attacking migratory birds

Bats are generally viewed as harmless, if spooky, creatures of the night. But scientists have revealed a more savage side, after witnessing a greater noctule bat – Europe’s largest bat species – hunting, killing and devouring a robin mid-flight.

The grisly recording reveals the bat as a formidable predator, climbing to 1.2km (4,000ft) before embarking on a breakneck-speed dive in pursuit of its prey. On capture, the bat delivered a lethal bite and subsequent chewing sounds, recorded between echolocation calls, indicated that the bat consumed the bird continuously during flight for 23 minutes without losing altitude.

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Prince William to attend Cop30 UN climate summit in Brazil

Prince of Wales’s decision welcomed as a means of drawing attention to the event and galvanising talks

The Prince of Wales will attend the crunch Cop30 UN climate summit in Brazil next month, the Guardian has learned, but whether the prime minister will go is still to be decided.

Prince William will present the Earthshot prize, a global environmental award and attend the meeting of representatives of more than 190 governments in Belém.

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Illegal gold mining clears 140,000 hectares of Peruvian Amazon

Armed criminal groups tear down precious rainforest to capitalise on record gold prices, report finds

An illegal gold rush has cleared 140,000 hectares of rainforest in the Peruvian Amazon and is accelerating as foreign, armed groups move into the region to profit from record gold prices, according to a report.

About 540 square miles of land have been cleared for mining in the South American country since 1984, and the environmental destruction is spreading rapidly across the country, Monitoring of the Andean Amazon Project (MAAP) and its Peruvian partner organisation, Conservación Amazónica, found.

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More than 40 Trump administration picks tied directly to oil, gas and coal, analysis shows

Report looks at White House nominees and appointees and agencies dictating energy, environment and climate policy

Donald Trump has placed dozens of people with ties to the fossil fuel sector in his administration, including more than 40 who have directly worked for oil, gas or coal companies, according to a new analysis.

The report from Public Citizen, a consumer advocacy and ethics non-profit that has been critical of the Trump administration, alongside the Revolving Door Project, a corporate watchdog, analyzed the backgrounds of nominees and appointees within the White House and eight agencies dictating energy, environmental and climate policy. That includes the Environmental Protection Agency, the interior and energy departments and others.

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‘From reef to retail’: experts warn global marine aquarium fish trade relies heavily on wild populations

New research finds 90% of marine fish sold by major US retailers are wild-caught, including threatened or endangered species

The global trade in marine aquarium fish relies heavily on fish sourced directly from wild populations, with many consumers unaware of the practice due to murky supply chains.

New research has revealed the scale of the issue, finding most marine aquarium fish sold online in the US were wild-caught, mainly from the western Pacific and Indian oceans.

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Tour operator Intrepid drops carbon offsets and emissions targets

Firm will instead invest A$2m a year in ‘climate impact fund’ supporting renewables and switching to EVs

One of the travel industry’s most environmentally focused tour operators, Intrepid, is scrapping carbon offsets and abandoning its emissions targets as unreachable.

The Australian-headquartered global travel company said it would instead invest A$2m (£980,000) a year in an audited “climate impact fund” supporting immediate practical measures such as switching to electric vehicles and investing in renewable energy.

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