Publisher's Synopsis
A hundred thousand years ago, a visitor from another galaxy would have viewed humans as just one more species of large animal, not that different from the chimp and pygmy chimp. A little later, something happened. Evolution sent humans down another track, remoulding human behaviour and human language and giving humans the capacity to wipe out entire species. The world has been changed by humans and yet humans still carry around their animal heritage. This book is an account of how humans turned from chimps into world dominators and how human behaviour "echoes" that of other animals in good and evil ways.
