The Universe

Season 5 Episode 2

Mars: The New Evidence

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Aired Tuesday 9:00 PM Aug 05, 2010 on The History Channel
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Episode Summary

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In the last few years, Mars has shown many new clues that life may have once existed there and may even exist there today. There is now proof that water once flowed on the surface and that the frozen poles are mostly water, not carbon dioxide as previously thought. Mars has snow, an auror and lightning generated by dust storms. Most intriguing of all are the seasonal plumes of methane that just may point to bacteria living below the surface.moreless
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