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A Second Tree of Life?

This week’s announcement by NASA of arsenic-based microbial life found right here on Earth has truly excited scientists, astrobiologists and space exploration enthusiasts (like myself). The very notion that we may have just found evidence of a second tree of life would allow, and force, us to question everything we know about life itself, including our origins. This would also be more evidence of the likeliness that we’ll encounter life everywhere we are able to travel in the Universe.

If there can be two trees of life here on Earth, there simply must be life everywhere in the Universe. This finding should inspire and encourage us, especially NASA that funded this research, to continue the push towards space exploration.


December 6, 2010 - Posted by | Audience Communication

1 Comment »

  1. The microbes found that uses arsenic in place of phosphorus in its DNA is called GFAJ-1 and was discovered in Mono Lake in California. However, the microbes were grown in a lab and the NASA-sponsored team will now look for those microbes in the field as well as in other arsenic-rich locations throughout the world.

    Comment by techtodayradio | December 6, 2010 | Reply

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