Our ancestors used knives two million years ago

Thanks to new technology it has finally been determined that hominids - our primate ancestors - were making and using tools in different parts of South Africa as long as two million years ago. This is much earlier than originally thought.Kathleen Kuman, a professor of archaeology at the University of the Witwatersrand, and researchers have dated a collection of tools from the Oldowan (a flaked stone tool industry) found in the Sterkfontein Caves in the Cradle of Humankind, after decades of lack ...