The search for the origin of human language has finally come of age. For centuries, progress in Ur-language research was slow and spasmodic; many scientists came to believe that there was no definitive way to answer its central questions. Then, in the past 20 years, everything changed. Linguist Kenneally shows how linguists, cognitive scientists, animal researchers, biologists, and geneticists have all contributed valuable new insights into language evolution.--From publisher description.