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Early humans relied on simple stone tools for 300,000 years in a changing east African landscape
Our prehistoric human ancestors relied on deliberately modified and sharpened stone tools as early as 3.3 million years ago.
Was it a stone tool or just a rock? An archaeologist explains how scientists can tell the difference
Add Yahoo as a preferred source to see more of our stories on Google. Stone tools are deliberately made by the hands of hominins, like these worked on by the author. John K. Murray Have you ever found ...
Kanzi was not the first great ape to learn how to communicate with humans using symbols. Koko the gorilla and Washoe the chimpanzee learned signs that were adapted from American Sign Language. But ...
Was it a stone tool or just a rock? An archaeologist explains how scientists can tell the difference
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 ...
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