16 Aug
2005
16 Aug
'05
4:49 p.m.
Maybe it's not an either-or situation. Perhaps it did and can go either way, and the genetic evidence is now long-gone because one path died-out completely on earth. --- Michael Carnes <michaelcarnes@earthlink.net> wrote:
The million-dollar question for me has to do with the origin of the extremophiles. We don't really know if our earthly critters formed in all of these hostile environments or if they formed in one environment and then radiated out to fill other niches, evolving to fit. You could see it going either way.
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