An Unseen Threat Picture this: you're walking down a dimly lit street at night, and every shadow seems to move. Your heart ...

In the quest to understand how and why early humans started walking on two legs, scientists are now looking to chimpanzees living in dry, open savannah-like environments for clues. A new study reveals ...

Two small genetic changes reshaped the human pelvis, setting our early ancestors on the path to upright walking, scientists say.

All vertebrate species have a pelvis, but only humans use it for upright, two-legged walking. The evolution of the human pelvis, and our two-legged gait, dates back 5 million years, but the precise ...