I made a polished stone celt axe using only primitive tools. Grinding and shaping the stone carefully produced a sharp, ...

The manufacture of a stone ax including the handle from using only primitive tools and materials. It is a celt (pronounced "selt") a type of ax with a polished stone head wedged into a hole or mortise ...

The myth that humans are the only tool-wielding animals was laid to rest long ago: chimps, otters and even birds use sticks and stones to leverage their innate abilities. But like so many other ...

The wooden sills of early barns were set on two-high courses of stone, based on the practical knowledge that moisture can climb one stone but not two. Most houses had full basements for wintertime ...

The study found that early humans passed down tool-making skills for hundreds of thousands of years in Kenya as their climate dramatically shifted.