Our prehistoric human ancestors relied on deliberately modified and sharpened stone tools as early as 3.3 million years ago.

The discovery of 330 stone artifacts in Kenya that date back 2.9 million years is throwing light on a key question in human evolution — who first used stone tools? Scientists unearthed hammerstones, ...

The very first humans millions of years ago may have been inventors, according to a discovery in northwest Kenya. Researchers have found that the primitive humans who lived 2.75 million years ago at ...

At a site in Kenya, archaeologists recently unearthed layer upon layer of stone stools from deposits that span 300,000 years, and include a period of intense environmental upheaval. The oldest tools ...

Have you ever found yourself in a museum's gallery of human origins, staring at a glass case full of rocks labeled "stone tools," muttering under your breath, "How do they know it's not just any old ...

Nyayanga site being excavated in July 2016. Credit: J.S. Oliver, Homa Peninsula Paleoanthropology Project “The assumption among researchers has long been that only the genus Homo, to which humans ...

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John K. Murray does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...