Transplant an organ? Why not an entire body?

Surgeon Robert White believed it possible — a new book offers more details. The controversial White spent his career working toward the goal of transferring the head of a sick patient onto the body of a healthy person. He never succeeded, but the medical and ethical implications of his work still echo through his field today. Gary Krist reviews "Mr. Humble and Dr. Butcher: A Monkey’s Head, the Pope’s Neuroscientist, and the Quest to Transplant the Soul", a detailed analysis of the unorthodox doctor's practices.