"Ambitious.... The truth is that Fromkin's outline is persuasively thought out and presented."-- The Washington Post Book World As the human race approaches the 21st century, questions of our past trouble us as much as those that concern our future. How did we get here? Where--and how--did Homo sapiens originate? How did we, precariously bipedal, come to dominate the animal kingdom, direct the flow of the Euphrates, fly a rocket to the moon? David...