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 ...

As long as 220,000 years ago—far earlier than previously thought—people quarried rocks for their tools in places they specifically sought out. An international research team led by the University of ...

Add Yahoo as a preferred source to see more of our stories on Google. Dozens of large and small stone flakes and production waste found at the Jojosi excavation site in eastern South Africa, April 11, ...

More than 40,000 years ago, Ice Age humans were carving repeated patterns of dots, lines, and crosses into tools and small ivory figurines. A new computational study of more than 3,000 of these ...

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 ...