Where do we come from? Where do animals come from? For thousands of years we really had no clue how living things were created -- great thinkers like Aristotle

Never before have the facts of life been presented in such an accessible—or novel—way. Our hero is Willy, a little sperm who lives inside Mr. Browne with 30

Over the past several decades, Richard Ellis has produced a remarkable body of work that has been called "magnificent" (Washington Post Book World), "masterful"

Birkhead reveals a world in which males and females vie with each other as they strive to maximize their reproductive success. Color illustrations.

This is the inside, never-before-told story of the Nobel Prize sperm bank, the most radical experiment in human breeding in U.S. history. More than 200 children