How and when did our distant ancestors develop milk? Why did they prefer such a complex and dangerous process as pregnancy to the convenient and painless laying of eggs? And what truly radically distinguishes us from animals? In her remarkable study, Dr. Kat Bohannon examines the evolutionary 'Eves' of each of the fundamental traits of Homo sapiens. Vividly portraying the lives and lives of Morganucodon, the Milk Eve, Donna (Protungulatum donnae), the Eve of Placental Mammals, and others, she takes you step by step through 200 million years of human evolution. 'Get ready to be immersed in the remarkable history of the female body.' — Bonnie Garmus, bestselling author of Chemistry Lessons.