WASHINGTON (AP) — Early human ancestors during the Old Stone Age were more picky about the rocks they used for making tools than previously known, according to research published Friday. Not only did ...
Imagine a tool from the Stone Age. You're probably thinking of something in the shape of a leaf, with at least one of its sides fashioned into a point. But whether that point is sharp or blunt, smooth ...
WASHINGTON — Old Stone Age humans were more picky about the rocks they used for making tools than previously known, according to research published Friday. Not only did these early people make tools; ...
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