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 ...

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 ...

Researchers have shed new light on the features that enable tree-dwelling mammals to move effectively through their environments, providing insights into the evolution of the distinct upright postures ...

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 ...

Learn about the different ways mammals descended from trees and what this can tell us about early primate evolution.

When Aristotle claimed that humans differ from other animals because they have the ability to be rational, he understood rational to mean that we could form our views and beliefs based on evidence, ...

A recent study performed on chimpanzees demonstrates that chimpanzees possess cognitive flexibility similar to that of humans. When circumstances or evidence change, chimps appear to do the thing ...

The wide, basin-shaped pelvis of modern humans helps us walk upright on two legs and give birth safely to babies with large heads. Pixabay Walking upright on two legs is one of the key traits that ...

SAN ANTONIO - Oliver, a chimpanzee known for his upright stature and humanlike traits, has died at a Texas wildlife refuge after spending much of his life in circus shows and research labs. Oliver ...