NASA scientists have learned that Mars has an abundant supply of water, after an analysis of the red planet's surface soil revealed it is 2% water. The soil was gathered by NASA's Mars Curiosity ... more 
NASA scientists have learned that Mars has an abundant supply of water, after an analysis of the red planet's surface soil revealed it is 2% water. The soil was gathered by NASA's Mars Curiosity rover, and Jen Markham explains why the discovery is such a 'wow' moment for researchers. less 
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Fri, Sep 27, 2013 2:18 PM EDT