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Robert G. E. Murray

Yes, it is worth thinking about the great diversity of life in such an extreme set of environments. Since endoliths do occur other places some of them may have been there nearly forever. However, there is probably a constant but gentle rain of varied microbes from diverse groups carried there on air curents considering that there is a microbial population in the top layers of snow. at least one Deinococcus species has been retrieved in the dry valleys and a few years ago there was a morphotypic identification of deinococci in the top centimetre of antarctic snow. All sorts of stuff living and dead gets around without our help.

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