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  • Mars has gas, and Curiosity finds organic matter—fuzzy signs of life?add to reading list  

    Posted on December 18, 2014 at 9:46 AM

    Updated Thursday, Dec 18 at 9:50 AM

    A NASA rover has found the building blocks of life on Mars. They might be the product of past or present life on the red planet—or they might not be.

    By Ben Brumfield CNN
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