
Human ancestors made the oldest known bone tools 1.5 million years ago
Ancient human relatives crafted sharp-edged tools out of animal bones around 1.5 million years ago, researchers say. Discoveries at Tanzania’s Olduvai Gorge, a famous East African fossil location, represent the oldest known evidence of systematic bone tool production by hominids, according to archaeologist Ignacio de la Torre of CSIC-Spanish National Research Council in Madrid and…