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 ...

Early humans who made some of the oldest known stone tools might have traveled miles to secure the best materials for their construction, new research suggests. Archaeologists traced the origins of ...

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 ...

When a stone sits on the Earth’s surface, cosmic rays quietly pepper it, leaving behind rare isotopes like tiny time stamps.

This photo provided by the Homa Peninsula Paleoanthropology Project in August 2025, shows Oldowan stone tools made from a variety of raw materials sourced more than 6 miles away from where they were ...