The world’s oldest tools – made by ancestors of modern humans some 3.3 million years ago – have been found in Kenya.
Stones had been deliberately “knapped” or flaked to make a sharp cutting edge, researchers said, according to Science magazine.
They are about 700,000 years older than the previous record holder and are likely to have been made by Australopithecus, an ape-like ancestor of Homo sapiens, or another species, Kenyanthropus.