Paul Davies unmasks one of the greatest unsolved mysteries of science in a three-part series. Is life a crazy chemical fluke or is it somehow written into the underlying laws of the universe? 1: The search fortraces of early life and the extraordinary places life exists on earth give biogenesis experts clues to the ultimate origin. Davies remodels the garden of Eden along the lines of a place we traditionally associate with hell. Music Geoff Proudley. Producer Louise Dalziel