Walking on two legs has long been considered a milestone in human evolution and one of our most defining characteristics.

How did human bipedalism evolve towards greater energy efficiency? By analyzing the occasional bipedal walking of baboons, researchers have modeled energy transfers between body segments. Their ...

In recent decades, scientists have debated whether a seven-million-year-old fossil was bipedal—a trait that would make it the oldest human ancestor. A new analysis by a team of anthropologists offers ...