In a book that illuminates, as never before, the evolutionary story of the A landmark book of popular science-a lucid, engaging account of how the human body evolved over millions of years and of how the increasing disparity between the jumble of adaptations in our Stone Age bodies and the modern world is fueling the paradox of greater longevity but more chronic disease. A landmark book of popular science-a lucid, engaging account of how the human body evolved over millions of years and of how the increasing disparity between the jumble of adaptations in our Stone Age bodies and the modern world is fueling the paradox of greater longevity but more chronic disease.