Early human ancestors may have learned to walk upright on two legs up in the trees rather than on the firm ground of Africa's ancient savannah. A first-of-its-type study led by researchers at the Max ...

Because it's easier than walking on four. That's the basic finding of a study conducted by a team of researchers that included University of Arizona anthropologist David Raichlen. Its findings appear ...

Add Yahoo as a preferred source to see more of our stories on Google. One longstanding theory of human bipedalism is that it first developed in our ancient hominid ancestors as a way to more easily ...

A long-running and bitterly fought dispute over whether the earliest known hominin had a knuckle-walking gait, like chimpanzees, or walked upright, like humans, may have been settled – but not ...

In 2001, researchers unearthed a scattering of fossils beneath the windswept dunes of the Djurab Desert of northern Chad. The remains were later identified as belonging to an extinct species, ...

The chimp with the most human-like gait and body type walked upright more efficiently than he knuckle-walked a finding that study co-author Herman Pontzer calls a snapshot of how this evolution may ...

The oldest distinguishing feature between humans and our ape cousins is our ability to walk on two legs—a trait known as bipedalism. Among mammals, only humans and our ancestors perform this atypical ...

A study on savannah-living chimpanzees suggests the need to move safely on thin tree branches could explain why early hominins that could walk upright kept their tree-climbing adaptations It’s hard to ...

Walking around upright on two feet is something no other primate does routinely. It seems to be one of the earliest major shifts in the evolutionary path that eventually led to us, modern humans. But ...