1. Soul Has Weight, Physician Thinks: Biologist Lee Silver tells us the story of a physician’s ambitious 1907 experiment to discover the weight of the soul. 2. Metamorphosis: One possibility of the afterlife from David Eagleman, read by actor Jeffrey Tambor. 3. When Am I Dead?: Is life over when your heart stops beating? When you take your last breath? When your brain fizzles out? Author and researcher Gary Greenberg and John Troyer explore these questions. 4. Anyone for Tennis?: We ask neuroscientist Adrian Owen, can the dead play tennis?