NASA Scientists 'Very Careful' With New Mars Data

NASA believes its Curiosity rover might have found carbon and chlorine molecules on the red planet. But before anyone says "life on Mars," NASA needs more testing to confirm the rover's results.

Source: http://www.npr.org/2012/12/03/166420095/nasa-scientists-very-careful-with-new-mars-data?ft=1&f=1007

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