Add Yahoo as a preferred source to see more of our stories on Google. Our prehistoric human ancestors relied on deliberately modified and sharpened stone tools as early as 3.3 million years ago. The ...
Ailsa Chang speaks with David Braun, an archeologist, about his team's discovery of a site in Kenya that suggests human ancestors built tools continuously much earlier than previously thought. So when ...
(CN) — Stone tools uncovered in central China suggest early humans there were far more inventive than scientists once believed, making complex tools tens of thousands of years earlier than expected.
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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. The selection of rock type depended on how easily the material could be ...
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