Destined to become a modern classic in the vein of Guns, Germs, and Steel, Sapiens is a lively, groundbreaking history of humankind told from a unique perspective.      100,000 years ago, at least six species of human inhabited the earth. Today there is just one.      Us. Homo Sapiens.      How did our species succeed in the battle for dominance? Why did our foraging ancestors come together to create cities and kingdoms? How did we come to believe in gods, nations, and human