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Old 10-25-2009, 01:19 PM   #1 (permalink)
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Was our oldest ancestor a proton-powered rock?

I found this article fascinating... especially the claim that life has arisen not one time, but two times to give rise to the bacteria and archaea, and the research claim that DNA replication has evolved independently twice.

Was our oldest ancestor a proton-powered rock? - life - 19 October 2009 - New Scientist

Quote:
The picture painted by Russell and Martin is striking indeed. The last common ancestor of all life was not a free-living cell at all, but a porous rock riddled with bubbly iron-sulphur membranes that catalysed primordial biochemical reactions. Powered by hydrogen and proton gradients, this natural flow reactor filled up with organic chemicals, giving rise to proto-life that eventually broke out as the first living cells - not once but twice, giving rise to the bacteria and the archaea.
Interesting stuff
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Old 10-25-2009, 01:21 PM   #2 (permalink)
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gah, I see its been posted by Quantum Destiny ... gah! Thats what I get for not looking hard enough.
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Old 10-25-2009, 01:32 PM   #3 (permalink)
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I was just about to post this

Was our oldest ancestor a proton-powered rock?

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