The findings come from a study of bone tools discovered at Olduvai Gorge in Tanzania and dated to around 1.5 million years ago. The discovery joins other finds — such as a 1.4-million-year-old ...

A 1.5-million-year-old cache of animal-bone tools reveals that ancient humans systematically crafted with this material much earlier than previously thought. Researchers uncovered 27 bone ...

WASHINGTON (AP) — Early humans were regularly using animal bones to make cutting tools 1.5 million years ago. A newly discovered cache of 27 carved and sharpened bones from elephants and hippos found ...

A US team of researchers has uncovered 27 bone tools made by human ancestors about 1.5 million years ago. While older bone tools have been discovered, similar examples of bone tool kits occur ...

WASHINGTON — Early humans were regularly using animal bones to make cutting tools 1.5 million years ago. A newly discovered cache of 27 carved and sharpened bones from elephants and hippos found ...