These are humanity’s first knives, says the 48-year-old CSIC researcher. Until now, the oldest known bone tools were from ...

Archaeologists have announced a discovery that puts the first use of bone tools back 1.5 million years. The finding included nearly 30 knives carved by the human ancestor Homo erectus in Tanzania.

While it only weighed roughly 27 kilograms, its knife-like teeth, powerful jaws and sheer strength meant it could take down large animals, and would not have had any predators of its own. " ...