Evidence that human ancestors living 500,000 years ago in what is now the Revadim archaeological site used their stone tools on bones of elephants and other mammals, perhaps to butcher them for food, is being reported in the journal PLoS ONE. Straight-tusk elephant rib with cut marks in association with flint tools, including a handaxe. Image credit: Solodenko N et al. The Acheulian site Revadim is located on the southern coastal plain of Israel....