Sharp stone technology chipped over three million years allowed early humans to exploit animal and plant food resources. But how did the production of stone tools -- called 'knapping' -- start?

In the hush before dawn, an ice shard drifts across a boundless ocean, each crystal edge etched in silent moonlight. For a ...

Yet the spiritual leader himself— and his contradictions— remain relatively little known.Ask your average German what they ...

The long-standing question of how animals came to have an anus may have been solved by studies of which genes are active ...