Tags Dr. Gil Levin possible life on Mars Viking Labeled Release Experiments from 1976 fossils NASA life searching experiments Ice Worm planetary protection Mars Sample Return Richard Hoover meteorite Martian microorganisms Curiosity findings Viking data digitalized the Moon first discussion ice at Martian poles Theory of Simplicity The Mars Habit Experiment Dr. Patricia Straat Martian methane NASA PR Methanogens Guest Dr. Gilbert Levin Tagline Viking updates, possible life on Mars updates and more with Gil View the discussion thread.