Earth's recorded history goes back only a few thousand years, its archaeological history a few thousand more. Now this book opens up the past as if a light was turned on in the darkness, and we see the incredible panorama of brave souls coming from other planets to settle on different parts of Earth. We watch the origins of tribal groups and the rise and fall of civilizations, and we can begin to understand the source of the wonderous diversity of plants, animals, and humans that we enjoy here on beautiful Mother Earth.