Second-ever Homo erectus-made bone hand axe found in Africa

Researchers claim to have discovered the second-ever Homo erectus-made bone hand axe in Ethiopia. The axe is approximately 1.4-million-year-old and seems to made from the thigh bone of a hippopotamus. Researchers suggested that the roughly 13 centimetres long axe was likely used to butcher animals to make them easier to eat. Its design was similar to the stone hand axes.