Inca Skull Surgery
See evidence of a radical surgical procedure common among the Inca 500 years ago.
The World's Strongest Stuff
From diamonds to spider silk, see some of the hardest, strongest, and toughest materials on Earth.
Building Faces From Fossils
Paleoartist Viktor Deak works from casts of fossil skulls to put faces to Turkana Boy and other ancient hominids.