An assessment of human evolution that theorizes that many more species of humans than previously thought have existed during the six million year history of the

Originally published in hardcover: Oxford; New York: Oxford Universtiy Press, 2009.

Creates three-dimensional scientific reconstructions for twenty-two species of extinct humans, providing information for each one on its emergence, chronology,

Let’s learn about the most mystifying species to ever walk the Earth! Plib is like every other Nøørfbløøk kid on Earth, except for one thing. He loves hum

In its 4.5 billion–year history, life on Earth has been almost erased at least half a dozen times: shattered by asteroid impacts, entombed in ice, smothered b