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

In the arid landscapes of the Afar region in Ethiopia, a series of bones dating back 3.4 million years could shake up what we ...

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

Looking back at human history, there is a scene where a four-legged being suddenly stood upright on two legs. Scholars ...