While more elaborate visions of the afterlife view mortal existence as a sort of larval stage in a grander human timeline, science tells us that death is the end. The human mind blinks out of existence as the brain dies. The vast multicellular, microbiota-colonized empire collapses into decay. And yet, as things fall apart, certain genes have been observed to activate. Join Robert and Joe as they explore the world of ‘undead genes.’