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sp332
on April 11, 2012
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The Amazing Trajectories of Life-Bearing Meteorite...
But if all life on earth is descended from something resistant to radiation, why is most life on earth so vulnerable to it now?
Qz
on April 11, 2012
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Why do we need to consume Vitamin C to avoid scruvy? Evolution abandons what is no longer necessary.
sp332
on April 11, 2012
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Most animals don't need to do that.
eric-hu
on April 11, 2012
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Who says anything descended from this bacterium? Maybe it's not as competitive as other bacteria in more hospitable areas.
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