World’s oldest stone tools challenge ideas about first toolmakers

http://feeds.sciencedaily.com/~r/sciencedaily/~3/4itzyr0V6Fo/150520133552.htm

Scientists working in the desert of northwestern Kenya have found stone tools dating back 3.3 million years, long before the advent of modern humans, and by far the oldest such artifacts yet discovered. The tools push the known date of such tools back by 700,000 years; they also may challenge the notion that our own most direct ancestors were the first to bang two rocks together to create a new technology.

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