Mr. Humble and Dr. Butcher: A Monkey's Head, the Pope's Neuroscientist, and the Quest to Transplant the Soul

In the early days of the Cold War, a spirit of desperate scientific rivalry birthed a different kind of space race: nor the race to outer space that we all know but a race to master the inner space of the human body. While surgeons on either side of the Iron Curtain competed to become the first to transplant organs like the kidney and heart, a young American neurosurgeon had an even more ambitious thought: Why not transplant the brain?

Mr. Humber and Dr. Butcher tells the eerie, illuminating story of a seemingly impossible quest—and the long, strange journey from science fiction to science fact.