Methane on Mars may signal life now

December 17, 2014 5:11 AM

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Methane on Mars may signal life now

SAN FRANCISCO — Life on Mars? Today? The notion may not be so far-fetched after all.

A year after reporting that NASA’s Curiosity rover had found no evidence of methane gas on Mars, all but dashing hopes that organisms might be living there now, scientists reversed themselves on Tuesday.

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