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Ukraine's environmental protection minister, Svitlana Grynchuk, and the Palestinian chair for the environmental quality authority, Nisreen Tamimi, raised the alarm on the ecological impact of war in their countries and beyond. Grynchuk said Russia's 'unlawful reporting' of its carbon emissions on Ukrainian territory was undermining the integrity of the Paris agreement. Tamimi said the rebuilding effort in Gaza would release an estimated 30m tonnes of carbon dioxide

• Cop29 live: campaigners say talks are ‘reaching point of real emotion’

‘While it was dark, I climbed up and put remote control cameras in the tree. I’d never have got the shot if I’d been up there. An orangutan always knows you’re there’

I was following orangutans in Borneo with my wife, Cheryl Knott, a primatologist who has spent 30 years working in Gunung Palung national park, in the Indonesian part of Borneo. I am a biologist by background, and did my PhD research in rainforest ecology in Borneo, before I went into photography and film-making. I saw so much destruction in the rainforest back in the 90s, and it dawned on me that I could publish scientific articles that maybe 10 people would read – or an article in National Geographic that 10 million people would see.

I was getting increasingly serious about my photography while working on my PhD when I got funding from the National Geographic Society for field research. Through that connection, I was able to show them my pictures and eventually I published an article in the magazine about my work, which in turn meant I was able to get an assignment to document Cheryl’s orangutan PhD.

Chris Uhlmann says power costs are soaring while renewables are falling short, but do the pair have anything in common?

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What is “The Real Cost of Net Zero” the political journalist Chris Uhlmann asked this week, after weeks of trailing his new documentary on Sky News Australia.

Uhlmann is no fan of Australia’s shift to renewables and, in a preview published in the Australian said politicians and governments “pushing ambitious renewables targets” were “breathtakingly, stunningly energy illiterate”.

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Interviews and analysis of court documents show how the world’s most prestigious consulting firm quietly helps fuel the climate crisis

Two giant, mirrored walls are set to rise out of the sands of the Arabian desert. They will run parallel for more than 100 miles from the coast of the Red Sea through arid valleys and craggy mountains. Between them, a futuristic city which has no need for cars or roads will be powered completely by renewable energy.

This engineering marvel, its creators say, will usher in “a revolution in civilization”. It’s the jewel in the crown of a $500bn Saudi government project known as Neom, turning a vast scrubland into a techno-utopia and world-class tourist and sporting destination. Perhaps a harbinger for the end of oil, it will supposedly put the powerful petrostate at the forefront of the energy transition. For American consulting giant McKinsey & Company, its advising on this project appears to be making good on the firm’s green promises.

You had to drive through the fire to leave. I remember my heart racing. This is Olivia’s story

Location Fort Smith, Canada

Disaster Wood Buffalo Complex fire, 2023

Olivia is Dene, a member of the Athabasca Chipewyan First Nation, and works in environmental management. In 2023, she was caught up in the massive evacuation when the Wood Buffalo Complex fire broke out, burning more than 500,000 hectares in and around the national park. Across Canada, the 2023 wildfire season was unprecedented in its scale and intensity. Eight firefighters were killed, and about 200,000 people were displaced.

A recent strike narrowly missed slave trade archives in Barbados, and experts warn more and worse is to come as global heating intensifies storms

When the Barbados National Archives, home to one of the world’s most significant collections of documents from the transatlantic slave trade, reported in June that it had been struck by lightning, it received widespread sympathy and offers of support locally and internationally.

A section of the 60-year-old building, Block D, located on the grounds of the “Lazaretto” (the island’s former colony for people with leprosy), caught fire, and sustained serious damage. Official documents including hospital and school records were lost. “It was not just paper that was in the building, but documents that have stories about our families and ancestors,” says the chief archivist, Ingrid Thompson.

At Cop28 last year they also pledged to double energy efficiency in an effort to cut the world’s reliance on fossil fuels

Almost 120 countries came together in Dubai last year at the Cop28 climate talks to pledge one of the most ambitious green energy targets in the history of the UN climate talks.

The plan put forward was to triple the world’s renewable energy and double its energy efficiency by the end of the decade in an attempt to cut the world’s reliance on fossil fuels.

Researchers found no difference in the diversity of species in urban meadows compared with those in rural settings

Small patches of wildflowers sown in cities can be a good substitute for a natural meadow, according to a study which showed butterflies, bees and hoverflies like them just as much.

Councils are increasingly making space for wildflower meadows in cities in a bid to tackle insect decline, but their role in helping pollinating insects was unclear. Researchers working in the Polish city of Warsaw wanted to find out if these efforts were producing good results.

Exclusive: Five oil and chemical companies which promised to divert plastic from environment produced 132m tonnes of it, analysis finds

• Bali recycling scheme swamped with garbage

Oil and chemical companies who created a high-profile alliance to end plastic pollution have produced 1,000 times more new plastic in five years than the waste they diverted from the environment, according to new data obtained by Greenpeace.

The Alliance to End Plastic Waste (AEPW) was set up in 2019 by a group of companies which include ExxonMobil, Dow, Shell, TotalEnergies and ChevronPhillips, some of the world’s biggest producers of plastic. They promised to divert 15m tonnes of plastic waste from the environment in five years to the end of 2023, by improving collection and recycling, and creating a circular economy.

Unlocking secrets of how the algae survive could help extend growing seasons for crop plants at high latitudes

Plants left for too long in the dark usually turn sickly yellow and die, but scientists were astonished to discover tiny microalgae in the Arctic Ocean down to 50 metres deep can perform photosynthesis in near darkness.

The microalgae were at 88-degrees north and started photosynthesising in late March, only a few days after the long winter polar night came to an end at this latitude. The sun was barely poking up above the horizon and the sea was still covered in snow and ice, barely allowing any light to pass through. Typical light conditions outside on a clear day in Europe are more than 37,000-50,000 times the amount of light required by these Arctic microalgae.

Data tracks how Earth’s heating has led to rising sea levels and extreme weather – yet there is no sign of emissions slowing

“The era of global boiling has arrived” is what the UN chief, António Guterres, presciently declared last year. In 2024, he has continued to be proven right; a report by the EU’s space programme has found it is “virtually certain” that 2024 will be the hottest year on record. The scientists found global temperatures for the past 12 months were 1.62C greater than the 1850-1900 average, when humanity started to burn vast volumes of coal, oil and gas. The chart below shows just how quickly global surface temperatures have climbed, and this year is on track to be the first to hit 1.5C above preindustrial temperatures.

From my perspective as a 12-year-old, it’s devastating that the protest is getting such a negative reaction from the NSW government

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All year, I have been looking forward to the People’s Blockade of the Newcastle coal port. I’ve been so excited to see the colourful array of kayaks and get to swim and paddle in the harbour with my friends to make our voices heard, and let the government know that we need to do everything we can right now to stop the climate crisis.

I know that Rising Tide has been working incredibly hard to make the blockade a fun and safe experience for everyone, but it feels like instead of listening to our concern about the climate crisis, the state government is doing everything they can to try to stop our “protestival” from going ahead.

Australia and Turkey are both lobbying to host Cop31, the world's annual United Nations climate change negotiations planned for 2026. The climate change minister, Chris Bowen, said Australia wants to co-host Cop31 'in partnership with our Pacific family'. Bowen also announced a $50m contribution to loss and damage caused by the climate crisis.

• Paris agreement is working, Australian minister tells Cop29, but much deeper cuts needed by 2035

• Chris Bowen makes last-minute diplomatic stop in Turkey as Australia ramps up bid to host Cop31

Delegates from poorer nations say classifications that date back to 1992 are obsolete and two countries ‘should be contributing’

China and India should no longer be treated as developing countries in the same way as some of the poorest African nations are, according to a growing number of delegates from poorer country at the Cop29 UN climate talks.

China should take on some additional responsibility for providing financial help to the poorest and most vulnerable, several delegates told the Guardian. India should not be eligible for receiving financial help as it has no trouble attracting investment, some said.

My brother called saying there was a storm. I was waiting, waiting, waiting. This is Elisa’s story

Location Saint-Martin-Vésubie, France

Disaster name Storm Alex, 2020

Elisa is a women’s clothing designer who runs her own label in Montreal, Canada. She was born and grew up in Nice, France, where much of her family remained, but was in Canada with her children and partner when Storm Alex gusted towards France and the mountain village where her mother lived. The storm was a powerful extratropical cyclone that caused extreme flooding around the Mediterranean, killing at least 15 people. Three months’ worth of rain – 50cm – fell on Saint-Martin-Vésubie in one day, 3 October 2020.

An update on our progress from the Guardian’s head of sustainability

• The Guardian environment pledge 2024
• Support urgent, independent climate journalism today

Five years ago the Guardian made a pledge that we would “play a part, both in our journalism and in our own organisation, to address the climate emergency” with our first annual environment pledge. That commitment reflected our long history of environment reporting and our view that individual companies had to take greater responsibility for their impact on the natural world. We wanted to demonstrate to readers that we were taking the action that our journalism showed was so necessary, and to be transparent about our progress. Today we publish the 2024 pledge.

Since then we have worked hard to measure and reduce our greenhouse gas emissions, to understand our impact on nature and to share our results openly with readers. In our latest sustainability report, published last month, we show that our emissions have fallen by 43% since 2020, putting us well on track to achieve our goal of a 67% cut by 2030.

Refurbishing an old building is subject to full VAT, but it isn’t if you build a polluting new one. The government’s priorities are all wrong

You can damn oil companies, abuse cars, insult nimbys, kill cows, befoul art galleries. But you must never, ever criticise the worst offender of all. The construction industry is sacred to both the left and the right. It may be the world’s greatest polluter, but it is not to be criticised. It is the elephant in the global-heating room.

It’s hard not to feel as though we have a blind spot when it comes to cement, steel and concrete. A year has now passed since the UN’s environment programme stated baldly that “the building and construction sector is by far the largest emitter of greenhouse gases”. The industry accounts for “a staggering 37% of global emissions”, more than any other single source. Yet it rarely gets the same attention as oil or car companies.

Simon Jenkins is a Guardian columnist

By relying on natural carbon sinks such as forests and peatlands to offset emissions, governments can appear closer to goals than they actually are

Relying on natural carbon sinks such as forests and oceans to offset continued fossil fuel emissions will not stop global heating, the scientists who developed net zero have warned.

Each year, the planet’s oceans, forests, soils and other natural carbon sinks absorb about half of all human emissions, forming part of government plans to limit global heating to below 2C under the Paris agreement.

Loved by tourists, elephants are, however, often loathed by farmers. Elephant conservation has been a been a success in Tsavo in Kenya, with their number increasing by about 6,000 in the mid-1990s to almost 15,000 in 2021. The human population has also grown, encroaching on grazing and migration routes for the herds, with resulting clashes becoming the No 1 cause of elephant deaths. But a long-running project by the charity Save the Elephants offered an unlikely solution: deterring some of nature’s biggest animals with some of its smallest: African honeybees

The president of the Spanish province of Valencia, Carlos Mazón, rejected calls for his resignation amid growing public anger over his management of the recent devastating floods that killed more than 210 people in the area. He conceded mistakes were made but claimed the unprecedented and 'apocalyptic' scale of the disaster overwhelmed the system

• Valencia’s president admits mistakes in flood response but will not resign

• Almost half of Valencia’s flood victims were aged over 70, figures show

The best of this week’s wildlife photographs from around the world

Questions raised over influence after 1,261 business and industry delegates registered for biodiversity summit in Colombia

Record numbers of business representatives and lobbyists had access to the UN’s latest biodiversity talks, analysis shows.

In total 1,261 business and industry delegates registered for Cop16 in Cali, Colombia, which ended in disarray and without significant progress on a number of key issues including nature funding, monitoring biodiversity loss and work on reducing environmentally harmful business subsidies.

Keir Starmer has confirmed that the UK has committed to an 81% cut to emissions by 2035. The prime minister also said the British government was due to launch the CIF Capital Markets Mechanism, a climate finance scheme, on the London Stock Exchange to help developing countries

• UK has ‘huge opportunity’ to lead on green investment, Starmer says

• Cop29 – live updates

'2024 – a masterclass in climate destruction.' That is how the UN secretary general, António Guterres, started his address to world leaders at Cop29 on Tuesday. 'Families running for their lives before the next hurricane strikes; workers and pilgrims collapsing in insufferable heat; floods tearing through communities, and tearing down infrastructure; children going to bed hungry as droughts ravage crops. All these disasters, and more, are being supercharged by human-made climate change,' he said

• Cop29: 2024 has been ‘masterclass in climate destruction’, says UN chief – live updates

• Critics say approval of ‘climate credits’ rules on day one of Cop29 was rushed

Odd-looking creatures called ciona are naturally rich in protein and one company aims to farm and process them for the table

At a seaside restaurant near the docks in Fredrikstad, Norway, there’s a selection of delicious looking entrees sitting in front of me. There is a cheesy lasagne, a savoury Mexican casserole, and a spicy chilli con carne. Biting in to each one in turn, I savour the familiar taste of ground beef. Or is it?

The dishes come from Pronofa Asa, a Scandinavian company whose purpose is to make new and sustainable protein sources. In 2022, it acquired the Swedish research company Marine Taste and expanded on its work turning ciona – or “sea squirts” to you and me – into mincemeat. The dishes in Fredrikstad were prototypes, but Pronofa plans to have its mincemeat on supermarket shelves in Norway and Sweden before the end of the year, it says, and will aim to expand throughout Europe in the coming years.

Voluntary standards proposed at Cop16 focus on local like-for-like habitat projects, while critics call the issue a ‘distraction’

International biodiversity offsetting “doesn’t work”, according to experts aiming to create a nature market that avoids the pitfalls of carbon offsets.

The biodiversity sector has been circling the idea of a credits market that would allow companies to finance restoration and preservation of biodiversity, deliver “net-positive” gains for nature, and help plug the $700bn (£540bn) funding gap.

Most recent fatality is 17th beluga to die since 2019 at Niagara Falls, Ontario, aquarium

Another beluga has died at Canada’s Marineland, as questions mount over the future of both the controversial theme park and one of the world’s largest populations of captive whales.

The most recent fatality – the fifth this year – is the 17th beluga to die at the Niagara Falls aquarium since 2019.

Newfoundland Memorial Univeristy team find white masses are likely material used to clean pipes in oil industry

When the chemist Chris Kozak finally got his hands on a sample of the mysterious blobs that recently washed up on the shores of Newfoundland’s beaches, Project Unknown Glob officially began.

At his disposal, Kozak and a team of graduate students had the “gorgeous” new science building and “world-class facilities” of Newfoundland’s Memorial University to run a battery of tests on the white, doughy blob.

Conservation groups are asking for the decision to allow Hvalur to hunt to be put on hold until after election

A coalition of conservation and animal welfare groups are urging Iceland’s president to step in and stop any plans the prime minister has to issue a whaling licence to Europe’s last whaler before the Icelandic election at the end of the month.

Earlier this year, the country granted a one-year licence to Hvalur to kill more than 100 fin whales this hunting season, despite hopes the practice may have been stopped after concerns about cruelty led to a temporary suspension in 2023.

Scientists use new technology to sequence the DNA of microscopic ocean creatures for the first time

Off the west coast of Greenland, a 17-metre (56ft) aluminium sailing boat creeps through a narrow, rocky fjord in the Arctic twilight. The research team onboard, still bleary-eyed from the rough nine-day passage across the Labrador Sea, lower nets to collect plankton. This is the first time anyone has sequenced the DNA of the tiny marine creatures that live here.

Watching the nets with palpable excitement is Prof Leonid Moroz, a neuroscientist at the University of Florida’s Whitney marine lab. “This is what the world looked like when life began,” he tells his friend, Peter Molnar, the expedition leader with whom he co-founded the Ocean Genome Atlas Project (Ogap).