Researchers have created microscopic robots so small they’re barely visible, yet smart enough to sense, decide, and move completely on their own. Powered by light and equipped with tiny computers, the ...

Bonus Challenge: Do the Bike the Bay race for a rare chance to bike over the Coronado Bridge. Why: The San Dieguito River ...

I’ve really fully committed to this. I’ve burned the boats, so to speak.' ...

Climbing, skiing and paddleboarding also feature in our round-up of this year’s charity challenges ...

Think you’ve got what it takes? From icy swims to grueling mountain climbs, these are the world’s toughest triathlons set to ...

James Madeley, 36 and from Cleadon, South Tyneside, began his challenge in honour of his mother Carol last January, swimming ...

An 80 year old man's swam 200 pool lengths to raise £6,300 for the hospice. Barrie Johnson took on the 5km swim challenge in ...

A Briton has revealed how he fended off a great white shark attack by kicking the apex predator. Chris Murray said the shark ...

A man has recalled the terrifying moment a great white shark tore into his hand and foot during an attack as he tackled a ...

A 78-year-old woman from Monks Eleigh completed 2,500 lengths of Hadleigh Swimming Pool to raise money for Endometriosis UK.

Pat Remboski knew that his Princeton High boys’ swim team was facing a challenge when its hosted rival WW/P-South in its last meet before the holiday break. “Before the meet we had a conversation,” ...

Discover the Ironman Triathlon, a challenging endurance event combining swimming, biking, and running since its inception in ...