From Live Science:
Evidence of a key mineral on Mars has been found at several locations on the planet's surface, suggesting that any microbial life that might have been there back when the planet was wetter could have lived comfortably.
The findings offer up intriguing new sites for future missions to probe, researchers said.
Observations NASA's Mars Reconnaissance Orbiter (MRO), which just completed its primary mission and started a second two-year shift, found evidence of carbonates, which don't survive in conditions hostile to life, indicating that not all of the planet's ancient watery environments were as harsh as previously thought.
The findings are detailed in a study in the Dec. 19 issue of the journal Science and will be presented today at the annual meeting of the American Geophysical Union in San Francisco
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