Curiosity discovers trace of carbon on Mars

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Curiosity discovers trace of carbon on Mars

Curiosity discovers trace of carbon on Mars
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Curiosity discovers trace of carbon on Mars

CBSTV Videos 1:33 mins

The Mars rover Curiosity has sent back 11,000 images over the last four months, but what fueled rumors of a big discovery was the collection of a few scoops of Martian soil. John Blackstone reports.

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