On the left side of his body, a bare patch of fur marked the spot where his front leg should have been. On the right, his front leg was so deformed, it was more of a stump with a hoof.

We can wiggle our toes, sure, but compared to our hands, our feet are rigid structures that move on a simple hinge from front to back. Just try to move one of your feet to this side or that—much of ...

The right hand skeleton of the adult female (MH2) against a modern human hand. The hand, seen here in palmar view, lacks three wrist bones and four terminal phalanges, but is otherwise complete ...

Remember that skeleton hanging in the front of your classroom? In some schools, those were actual human remains. We used science to figure out the story behind one of them.

Humans Ancient footprints show how early human species lived side by side. Footprints preserved on the shore of Lake Turkana in Kenya seem to be from two ancient human species, showing they lived ...