Early stone toolmaking marks an important juncture in evolution. The Oldowan stone tools from Hadar, Ethiopia, are among the oldest known, dating back 2.3 million years. Shown from various angles ...

Oldowan core, Koobi Fora, Kenya (First time period, below baselines). Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing ...

Those tools were a bit simpler and so far have only been found in one spot, said Shannon McPherron, an archaeologist at Germany’s Max Planck Institute for Evolutionary Anthropology who was not ...