skywatcher2501 writes: The quantity of methane gas on Mars cannot be caused in such quantities by chemical processes of disintegrating meteors entering the atmosphere. So two theories remain: either the gas is a by-product of a lifeform's metabolism, or it is created as a by-product of reactions between volcanic rock and water.
DEAL: For $25 - Add A Second Phone Number To Your Smartphone for life! Use promo code SLASHDOT25. Also, Slashdot's Facebook page has a chat bot now. Message it for stories and more. Check out the new SourceForge HTML5 Internet speed test! ×