In this episode we learn that we are tough to kill and hard to keep alive. Within our sphere we are durable and resilient, but that sphere is very narrow indeed. We survive catastrophes, searing heat, crippling injuries, and seemingly mortal wounds. But could we survive in any other time and place than here and now? This is an open question.   Artwork: Oz by Ian Armstrong Music: Icy Vindur by A Himitsu