The discovery of a 1.8 million-year-old pinky bone in Tanzania's Olduvai Gorge suggests that our ancestors had already come down from the trees by that time
A metal under pressure has broken the record for the warmest superconductor yet – it could work at Antarctic temperatures rather than those found in the depths of space
Central Asia's glaciers, which supply water to one of the planet's largest irrigated areas, are melting fast, highlighting a worrying global trend in ice loss