A seven-million-year-old fossil may mark the moment our ancestors first stood up and walked.

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

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

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

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

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 ...

Scientists uncover fossils suggesting Sahelanthropus tchadensis, a 7-million-year-old ancestor, could walk upright. Could ...

Scientists argue ape-like Sahelanthropus tchadensis that lived in Africa 7m years ago is best contender but more fossils are needed ...

Scientists suggest a 7 million year old ape like species, Sahelanthropus tchadensis, may be humanity’s earliest ancestor to ...

A big difference between humans and other apes is the ability to stride easily on two feet. A new analysis of fossil bones shows that adaptations for bipedal walking go back 7 million years.

A landmark study of an ancient thigh bone confirms when our earliest ancestors stood upright. This discovery proves that the ...