Far up in the Ethiopian highlands, the resounding strike of stone against stone was probably a familiar one two million years ago. Ancient hominids chipped away to create simple tools: hammerstones ...

Monkeys in southern Thailand use rocks to pound open oil palm nuts, inadvertently shattering stone pieces off their makeshift nutcrackers. These flakes resemble some sharp-edged stone tools presumed ...

Compared to other P. robustus males recovered from a nearby cave system called Swartkrans, DNH 155 (pictured here) was much smaller and had more female-like characteristics. Jesse Martin and David ...

Shizuka, a seven-year-old female Sumatran orangutan, seen in a cage before being transferred to Indonesia at Suvarnabhumi International Airport. CREDIT: SOPA Images/Getty Images (NEW YORK) — ...

What does it mean to be human? For a long time, the answer seemed clear. Our species, Homo sapiens - with our complex thoughts and deep emotions - were the only true humans to ever walk the Earth.

Benjamin holds a Master's degree in anthropology from University College London and has previously worked in the fields of psychedelic neuroscience and mental health. Benjamin holds a Master's degree ...

"Textbooks treat these ancient hominids as static piles of fossil bones," said Sponheimer. "We treat them as biological organisms moving across the landscape. It's entirely possible that many things ...

Our capacity for complex social interactions is a defining feature of humanity, but how did it evolve? It seems like it would have been a slow, gradual process, but a new statistical model suggests ...