TechnologyCan floating data centres meet AI's huge energy demand? A US start-up is putting autonomous data centres in the ocean, powered by wave energy, but experts warn that the harsh environment could make maintenance challenging Analysis
HumansNeanderthal 'kneeprint' found next to mysterious stalagmite circle An impression made in clay around 175,000 years ago could be a kneeprint left by one of the builders of a strange stalagmite circle found deep inside Bruniquel cave in south-west France News