Historians relying on written records can tell us nothing about the 99.9 per cent of human evolution which preceded the invention of writing. It is the study of genetic variation, backed up by language and archaeology, which provides concrete evidence about the spread of farming, the movements of peoples across the globe, the precise links between races - and the sheer unscientific absurdity of racism. "Genes, Peoples and Languages" offers an astonishing investigation into the past 100,000 years of human history and a rare, firsthand account of some of the most significant and gripping scientific work of recent years. Cavalli-Sforza is one of the great founding fathers of archaeogenetics, and in this book he maps out some of its grand themes.