Contrary to the idea that apes evolved their upright posture to reach for fruit in the forest canopy, the earliest known ape with this stature, Morotopithecus, lived in more open grassy environments.
Long-standing assumption that humans killed large mammals 4.5m years ago has been debunked by researchers – but some experts still think humans played a part in the demise of biodiversity
A manifesto from 23 researchers challenges old models, and outlines the major new directions archaeology should follow to solve the puzzling origins of modern humans.