Humans’ ability to walk upright on two legs may have evolved in trees, rather than on the ground, according to scientists studying wild chimpanzees in Tanzania. CNN values your feedback 1.

In the 1970s, a peculiar chimpanzee named Oliver captivated the world with his human-like traits. Unlike other chimps, Oliver walked fully upright on two legs and had facial features that seemed ...

Researchers have digitally reconstructed the leg muscles of an ancient human ancestor that lived 3.2 million years ago, revealing they could stand and walk upright like modern humans.

When it comes to walking upright, the researchers noticed something interesting in the chimps. Issa chimpanzees were seen walking with two feet when up on the trees more frequently than on the ground.

In terms of physical stature, adult chimpanzees can be an intimidating sight. When standing upright, they can reach heights up to 5 feet or more, although they typically move on all fours. Like with ...

(CN) — It’s unlikely her leg muscles were evolved enough to dance the Griddy, do a split, or run for extended periods, but new research out of Cambridge University suggests a 3.2 million-year-old ...

A chimpanzee’s toes are long and splayed, and its big-toe equivalent pulls away from the other digits like a thumb: a prehensile foot designed for quick climbing.

Dr. Sydney W. Britton of the University of Virginia kept chimpanzees around the house. ... But they could be made to stand upright for as much as eight hours by being put on a tilting table.

“We are now the only animal that can stand upright with straight knees. ... (3 feet, 7 inches) tall and weighed about 29 kilograms (64 pounds). Her brain was small, like a chimpanzee's, ...

Gorillas and chimpanzees, though sharing DNA and habitats, exhibit distinct characteristics. Gorillas, the largest primates, are peaceful herbivores living in stable family groups led by a dominant ...

The first new study, published April 13 in the journal Science, suggests that life in the open woodlands of Africa and a leafy diet may have influenced the upright stature of humans’ ape ancestors.

The team recorded every time that the chimpanzees were upright, and whether it occurred while they were on the ground or in the trees. They then compared this with instances of standing on two ...