Every day, hundreds of stone artifact enthusiasts around the world sit down and begin striking a stone with special tools attempting to craft the perfect arrowhead or knife. This craft is known as ...

Humanity’s earliest cutting tools started with a dangerous technique that still demands precision today. In this episode, a ...

Sharp stone technology chipped over three million years allowed early humans to exploit animal and plant food resources. But how did the production of stone tools -- called 'knapping' -- start?

On the morning of July 9, 2011, we were climbing a remote hill near the western shore of Lake Turkana in northern Kenya. Since then, conventional wisdom in human evolutionary studies has supposed that ...

Rex Watson displays two bi-face knives that he made from Oregon and California obsidian. The handles are from mule deer and elk antlers. (The Observer/PHIL BULLOCK). STORY BY DICK MASON OF THE ...