About 100,000 years ago, Homo sapiens was still an insignificant animal minding its own business in a corner of Africa. Our ancestors shared the planet with at least five other human species, and their role in the ecosystem was no greater than that of gorillas, fireflies, or jellyfish. Then, about 70,000 years ago, a mysterious change took place in the mind of Homo sapiens, transforming it into the master of the entire planet and the terror of the ecosystem. Today it stands on the verge of becoming a god, acquiring divine abilities of creation and destruction. * How did Homo sapiens conquer Earth? * What befell the other human species? * When did money, states and religion appear, and why? * How did science and capitalism become the dominant creeds of the modern era? * Does history have a direction? * Is there justice in history? * Did people become happier as history unfolded? * And what are the chances that Homo sapiens will still be around in a hundred years?