We modelled how early human ancestors ran – and found they were surprisingly slow

Imagine the scene, around 3 million years ago in what is now east Africa. By the side of a river, an injured antelope keels over and draws its last breath. The carcass is soon set on by hyenas, who tussle with a crocodile. The crocodile surfaces and grabs part of the animal.

The hyenas win and the crocodile retreats with only a leg. After having their fill, the hyenas slope off. Some funny-looking apes approach, walking upright. They have what appear to be stones with sharp edges in their hands. They hurriedly cut off some scraps of meat and start chewing at them.

Their…

© La Conversation - mercredi 12 mars 2025