title: Deep Time Deep Survival.
authors.forename: David
authors.initials: D
authors.lastname: Grinspoon
mesh_terms: D057231:Climate Change; D018534:Earth, Planet; D018559:Exobiology; D053476:Extinction, Biological; D055593:Geological Phenomena; D006801:Humans; D009689:Nuclear Warfare / Q000517:prevention & control