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?

Humans Acquired 20% of Increased Brain Functions Due to a 'Ghost Population' That Coexisted With Our Ancestors The origin of ...

Homo naledi, an extinct relative of modern humans whose brain was one-third the size of ours, buried their dead and engraved ...