AI can deliver answers in seconds, but powering it requires vast data centres, advanced chips, and huge amounts of electricity and water. As investment surges, questions grow over AI’s resource demands and environmental costs.

El Nino will intensify even more before peaking in December, the United Nations said Thursday, warning it could be among the strongest witnessed since at least 1950. The naturally occurring weather phenomenon is set to bring higher temperatures to much of the planet, the UN's weather and climate agency said, with its impact compounding the effects of man-made climate change.

‘We are not asking for pity, we are asking for help.’

A 13-year-old girl has called on world leaders to act on climate change and save her country, Tuvalu. Melelusi Sokotia made the plea to leaders at a summit ahead of the UN’s COP31 climate forum in Turkiye.

What can gouge out lakes, carve through mountains, and make weird marks in the ground that look /exactly/ like yeti claws? Well, not a yeti, probably. In this episode, we’ll learn about glaciers, the huge frozen beasts that have shaped our world – and might soon be leaving it.

Small purchases help families survive from day to day. But behind the Philippines’ sachet economy lies a much bigger cost — one borne by communities, the environment and the climate.

How did the El Niño of 1877 contribute to the deaths of 50 million people, roughly 3% of the population?

As the world faces a record-breaking El Niño, we speak to historians and scientists about what happened in 1877 and what we can learn from one of the deadliest climate-related disasters ever recorded. We explain what El Niño is and how scientists think our warmer world could impact future events.

Indonesia is battling its worst wildfires in more than a decade, fuelled by drought and intensifying El Nino conditions.

In Borneo, local volunteers are taking on the fires threatening their homes, forests and communities as dry conditions continue to fuel the crisis.

What’s causing these massive craters found by scientists in the arctic? 💥

The latest climate rollback under the Trump-appointed Environmental Protection Agency (EPA) takes emission limits off coal and gas plants.

Explore the hidden history of the ancient people who shaped the Amazon.

For centuries, many historians believed the ancient Amazon rainforest was an untouched wilderness, incapable of supporting large human populations. Now, groundbreaking archaeological discoveries are revealing a secret history, stretching back millennia. Explore the stunning story of the ancient Amazonians who reshaped the rainforest.

Lewes has become the first town in the UK to formally recognise the rights of trees. Campaigners say trees across the whole town should be allowed to follow their natural life cycles. The move, which was passed by the East Sussex town's council, isn’t legally binding. But residents hope it will change attitudes and help with preservation.

Sugar cane farmers in KwaZulu-Natal province say a severe labour shortage is threatening the harvest, as thousands of mainly undocumented migrant workers have left South Africa amid rising anti-migrant sentiment and violence. Farmers warn that without enough workers, sugar output could fall, potentially forcing imports and harming an industry that is a major export earner. Labour unions dispute this, arguing that South Africans are willing to do the work but are being overlooked because they would demand fair, legally mandated wages.

A 10,000-year-old glacier in Slovenia is possibly days away from melting entirely.

The Triglav Glacier, a once-popular skiing spot high in the Alps near Slovenia's border with both Austria and Italy, has been monitored by scientists since 1946, when it covered 34 acres.

But years of climate change and rising temperatures, coupled with below-average snowfall last winter and premature melting this spring, have brought one of Slovenia's last glaciers to the precipice of extinction.

Melting glaciers pose real concerns for European nations. In Switzerland, over the past five years alone, glaciers have lost nearly 20% of their ice, threatening the supply of water and hydroelectric power.

In the heart of the Egyptian capital Cairo, within the labyrinthine streets of the Manshiyet Nasser district, nearly 120,000 residents process a third of the megacity's waste every day. Long marginalised, these informal recycling specialists are now undergoing a dramatic transformation due to geopolitical tensions in the Strait of Hormuz, through which polyethylene from the Gulf usually passes.

A Super "Godzilla" El Niño? Here's everything you need to know in under 5 minutes.

How worried should we be about giant asteroid impacts? In this episode of Crash Course Geology, we’ll learn how to tell an asteroid from a meteorite, what happens when space rocks approach the Earth, and how scientists track potential threats before they reach us.

The water off Thailand's Ko Lan island has turned a vibrant shade of green thanks to a plankton bloom, keeping many tourists out of the water. But scientists say the bigger concern may be what's happening beneath the surface, where oxygen levels are falling.

Kariyachalli is one of 21 islands off India’s Tamil Nadu coast, and has already lost more than 80 percent of its landmass over the past 50 years due to coral mining, bleaching and rising sea levels. Scientists warn it could vanish entirely by 2036 without intervention. A local community is now working with marine researchers to restore seagrass and coral reefs, creating natural barriers to protect both the island and the coastal economy that depends on it.

Powerful typhoon Dujuan is battering Tokyo and is forecast to bring record rainfall.

Nearly two million people across five prefectures are under evacuation orders, with 50,000 households without power.

In Kanagawa, firefighters fear a woman has been buried alive after a landslide crushed a house, while a man in Chiba was taken to hospital after being trapped while working to clear debris.

Some 300 flights have been cancelled and some train services suspended.

El Niño is already here.

The natural weather pattern, which develops in the Pacific Ocean, is bringing extreme weather to many parts of the world. There's no clear evidence that climate change has affected El Niño events.

We heard from our BBC reporters across the globe about how it's already unfolding in their area.

Islamabad and Rawalpindi are seeing heavy monsoon rains and flooding, yet many residents still struggle to get water at home. With public supply falling short, households are turning to costly private tankers. So why can’t the cities store enough rainwater to meet growing demand?

Nearly five million people have been affected by severe flooding in India's Bihar state, with submerged roads forcing residents to travel by boat and authorities launching relief operations.

The UK is set for wetter and warmer-than-normal weather this autumn, driven by a strengthening El Niño, according to the latest forecasts from the Met Office. The climate phenomenon - forecast to be the strongest in living memory - will influence a change to stormier conditions later this season. BBC lead weather presenter Simon King answers all the biggest questions you might have.