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 ...
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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
(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) At first glance, it might seem impossible to decipher. But as an experimental ...
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