NASA Curiosity rover may have solved Mars methane mystery - CNET

1. NASA Curiosity rover may have solved Mars methane mystery  CNET
2. NASA Scientists Closer to Explaining Mars Methane Mystery  NASA
3. Glauconitic-like clay found on Mars suggests the planet once had habitable conditions  Phys.org
4. Clay Dug Up by NASA Mars Rover Makes It Seem Like Red Planet Could've Supported Life  Futurism
5. Like a Ghost: Scientists Closer to Explaining Exciting Mars Methane Mystery  SciTechDaily
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