Recent research suggests that humans had sex with other members of the hominin group. These ancient homo sapiens had intercourse with a “ghost species” of “proto-human.” The idea is probably more complex than just having aliens plucking our hominid mothers out of Eden and mating with them; however, it most certainly has us wondering about exactly which side of the family our humanity sprang from. On this intriguing episode of Ground Zero, Clyde Lewis reveals GHOST SPECIES: THE LAST APE STANDING. The original broadcast was on July 26, 2017.