Scientists have uncovered evidence that modern humans emerged from two long-separated ancestral groups, not just one. This ...

Early human evolution may have been more complex than scientists previously thought, with modern humans evolving from two ...

Colin Renfrew, Nature "The scope and explanatory power of this book are astounding."— The New Yorker "Serious, groundbreaking biological studies of human history only seem to come along once ...

Ancient artifacts such as stone tools and fossils, including ancient human skulls and teeth, provide crucial information for understanding the origins of modern humans. The archaeological record ...

The meat of the book deals with the human populations that are present ... Reich concludes by making some observations about the social history of our species that is implied by ancient DNA.