New study of 7-million-year-old fossils from Chad proves Sahelanthropus tchadensis walked upright while still climbing trees.

A seven-million-year-old skull found in Chad sits at the center of a long argument about human origins. The species, ...

Learn how detailed 3D analysis uncovered evidence that upright walking emerged near the very start of the human lineage.

Scientists may have cracked the case of whether a seven-million-year-old fossil could walk upright. A new study found strong ...

The oldest ancestor of humans may be a seven-million-year-old ape, which started walking upright two million years earlier than other hominids.

Scientists uncover fossils suggesting Sahelanthropus tchadensis, a 7-million-year-old ancestor, could walk upright. Could this tiny bipedal ape-like hominin rewrite what we know about the earliest ...

When a partial fossil foot emerged from Ethiopia’s ancient sediments, it carried a quiet but profound implication: Lucy, the famous Australopithecus afarensis skeleton, may not have walked her ...

Two small genetic changes reshaped the human pelvis, setting our early ancestors on the path to upright walking, scientists say. One genetic change flipped the ilium — the bone your hands rest on when ...

“For over a hundred years, it was hypothesized that our ancestors lived in grassland savannahs and that this major ecosystem change drove human evolution, including the origins of bipedalism and ...

Imagine the scene, around 3 million years ago in what is now east Africa. By the side of a river, an injured antelope keels over and draws its last breath. The carcass is soon set on by hyenas, who ...