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Sophisticated Tool Kit Predates Humans

The earliest known stone toolkit could write a whole new chapter in the book of human evolution, especially since the tools were not even made by our genus.

May 20, 2015
1:00 PM EDT
A recreation of Australopithecus afarensis, one of the possible creators of newly found tools that date to 3.3 million years ago. | Tim Evanson, Flickr