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Originally posted by blitz77:
How about this then?
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But when life first appeared around 3.5 billion years ago, the ocean was much saltier than it is today. Estimates of the early ocean's salinity range between 1.2 to 2 times present-day salinity.
--Salt of the Early Earth
The article you cited contradicts your main argument in this thread...
"
However, DasSarma thinks that life also could have begun in the early salty ocean. He has found that, due to the low water activity of hypersaline brines, macromolecules can form from organic molecules. A macromolecule is a very large molecule, such as a protein or other polymer."
So perhaps high salinity is a [i][b]requirement[/i][/b] for abiogenesis. Thank you for bringing this article to our attention. I wasn't aware of this hypothesis before.
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