Scientists may have cracked the case of whether a seven-million-year-old fossil could walk upright. A new study found strong anatomical evidence that Sahelanthropus tchadensis was bipedal, including a ...

Human history features a pivotal moment when four-legged beings stood upright on two legs. Scholars regard this shift as the defining turning point that made humans uniquely human. For decades, ...

A seven-million-year-old skull found in Chad sits at the center of a long argument about human origins. The species, Sahelanthropus tchadensis, was announced in the early 2000s as a possible early ...

It’s a common mistake to think we came directly from the monkeys or chimps you see at the zoo today, […] ...