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When you move beyond trillions, there are some extremely mind-bending numbers, says Richard Fisher. Some of them are too large to fit in the mind – or indeed the visible Universe.

Andy Donaldson swam the 23km route by night to break the record by four minutes.

Police in Punjab are looking for Amritpal Singh, who's on the run after calling for a Sikh homeland.

The deal is a lifeline for the country which is facing its worst economic crisis in over 70 years.

Almost every day women in India face sexual harassment in public places. So how do they deal with it?

Wagner leader Yevgeny Prigozhin was a Putin ally before launching a rebellion inside Russia.

Beset by scandals and crisis, many people are questioning how a totemic bank ended up beyond repair.

The car became stuck by the basement windows of the Francis Hotel in the early hours of Sunday.

A man who fled the UK after a fight in 1980 is acquitted after extradition proceedings 41 years later.

Research suggests there is a crucial window during weaning to lower the allergy risk.

An out-of-pocket dad sends in reinforcements to claim money from an airline over a cancelled flight.

The Russian president is wanted by the ICC for alleged war crimes during his Ukraine invasion.

From Marvel's Thor to Game of Thrones and Neil Gaiman, Norse legends have influenced culture and current ideas, according to a new book.

A local nuclear plant is recovering 400,000 gallons of contaminated water that spilled in November.

The clocks are changing and the days are getting longer. Research suggests we might want to consider what this means for our bedtime.

The world is reliant on international shipping and emissions from the sector are growing. Will sustainable seafaring mean a return to sail-powered ships?

Methods used on the Spanish farm would be "cruel" to such intelligent animals say experts, as details emerge.

UN inspectors are trying to locate around two and a half tonnes of uranium ore.

US footage shows the jet apparently dumping fuel as it makes two close passes with the drone.

Extreme travellers want to go everywhere - but one group just moved the goalposts...

Artificial intelligence will radically change our lives, for better and worse. Experts are worried.

A BBC reporter goes undercover and confronts doctors offering bogus treatments for his genetic condition.

Of Australia's great road trips, the Tanami Track might be the most intimidating. But the rugged nature that defines this epic desert journey could soon change.

It’s harder than ever to step away from our devices, which are so entwined in our lives. Is it fruitless to even try?

We’ve created GPT-4, the latest milestone in OpenAI’s effort in scaling up deep learning. GPT-4 is a large multimodal model (accepting image and text inputs, emitting text outputs) that, while less capable than humans in many real-world scenarios, exhibits human-level performance on various professional and academic benchmarks.