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  1. #1
    Join Date
    Feb 2006
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    2,081

    NASA discoveres arsenic-eating bacteria

    http://www.nature.com/news/2010/1012....2010.645.html

    Maybe not really arsenic eating, but a more accurate description than the "arsenic based life" title you see in a lot of other sites about this. This bacteria uses arsenic as a substitute for phosphorous in its biological processes. One person mentioned to me that this raises the possibility that life has e\/olved on Earth more than once.

    What do you guys think? I personally don't think so; I believe that this demonstrates the extraordinary chemical flexibility that bacteria were, to a degree, already known to exhibit. This just happens to be a much, much more extreme example. I do also believe, however, that this could mean a lot in our quest to find life forms on foreign cosmic bodies.

  2. #2
    Join Date
    Nov 2005
    Location
    Australia
    Posts
    5,324

    Re: NASA discoveres arsenic-eating bacteria

    Quote Originally Posted by Blue Crab of PAIN!!! View Post
    http://www.nature.com/news/2010/1012....2010.645.html

    Maybe not really arsenic eating, but a more accurate description than the "arsenic based life" title you see in a lot of other sites about this. This bacteria uses arsenic as a substitute for phosphorous in its biological processes. One person mentioned to me that this raises the possibility that life has e\/olved on Earth more than once.

    What do you guys think? I personally don't think so; I believe that this demonstrates the extraordinary chemical flexibility that bacteria were, to a degree, already known to exhibit. This just happens to be a much, much more extreme example. I do also believe, however, that this could mean a lot in our quest to find life forms on foreign cosmic bodies.
    Definitely not evidence that life evol.ved on Earth more than once. This species was evol'ved in the lab from a species that was known to be arsenic-tolerant. The wild species hadn't made the substitution.

    But it certainly has implications for what we call life and the search for ET. Nothing that science-fiction authors and even astrobiologists haven't been speculating about for a long time, but it's nice to finally have evidence that it can occur.

  3. #3
    Join Date
    Dec 2010
    Posts
    340

    Re: NASA discoveres arsenic-eating bacteria

    Sorry I thought you said arse eating bacteria....
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