David R. Braun

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Sharp edged flake of Oldowan stone tool found at the Namorotukunan site in Kenya. Author supplied

Early humans relied on simple stone tools for 300,000 years in a changing east African landscape

Niguss Gitaw Baraki, George Washington University; Dan V. Palcu Rolier; David R. Braun, George Washington University; Emmanuel K. Ndiema, National Museums of Kenya, and Rahab N. Kinyanjui

The age of the oldest known Oldowan stone tools from east Turkana has been pushed back by 700,000 years.

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