A 4.4-million-year-old Ardipithecus fossil named "Ardi" shows early humans walked upright, keeping ape-like climbing ...

For decades, small grooves on ancient human teeth were thought to be evidence of deliberate tool use – people cleaning their teeth with sticks or fibers, or easing gum pain with makeshift “toothpicks” ...

The findings have the potential to resolve the longstanding "Muddle in the Middle" of human evolution, researchers said.

Evidence is mounting that the evolution of our species is more convoluted than we imagined — more like a braided stream than a branching tree.

“But we tested it again and again to test all the models, use all the methods ... as primitive forms or subgroups of the three major branches of humanity. “Human evolution is like a tree,” he said.

The Indigenous peoples of the Bolivian highlands are survivors. For thousands of years they have lived at altitudes of more than two miles, where oxygen is about 35 percent lower than at sea level.

The scientists claim their analysis "totally changes" our understanding of human evolution and, if correct ... "But we tested it again and again to test all the models, use all the methods, and we are ...

Humans did not arrive in Australia 65,000 years ago, and likely didn't reach the land down under until around 50,000 years ago, a controversial new paper reports. The reasoning behind the finding is ...