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 ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Reconstruction of Xigou tool-making. (CREDIT: Hulk Yuan) Old beliefs about early human behavior in East Asia are being challenged ...

Recent discoveries have unveiled a fascinating chapter in human history, as stone tools provide compelling evidence of Paleolithic migrations across the Pacific into North America. This challenges the ...

(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.

Get any of our free daily email newsletters — news headlines, opinion, e-edition, obituaries and more. WASHINGTON (AP) — Early human ancestors during the Old Stone Age were more picky about the rocks ...