Jonathan Safran Foer spent much of his teenage and college years oscillating between omnivore and vegetarian. But on the brink of fatherhood-facing the prospect of having to make dietary choices on a child's behalf-his casual questioning took on an urgency His quest for answers ultimately required him to visit factory farms in the middle of the night, dissect the emotional ingredients of meals from his childhood, and probe some of his most primal instincts about right and wrong. Brilliantly synt