If there's any life on Mars, it's not likely to exist on or just below the planet's surface, concludes a new study of Mars' mysterious methane, a gas which on Earth is tied to biological processes. The discovery of rich plumes of methane on Mars earlier this year fed theories that the planet could host underground colonies of micro-organisms. However, rapid destruction of methane suggests that the planet's environment may be too hostile to support life.
Originally posted here:
New study says there probably isn’t any life on Mars