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Not that there is anything wrong with carbon chauvinism, after all it's the only way of life we know, but could other elements offer the complexity and diversity of compounds to allow life to occur. I recall silicon being a candidate due to its tetrahedral chemistry. The modification of bases is one thing (TNA), but does anyone know of other theories pertaining to an origin of life that does not require carbon? Just curious.
Permalink Wed, 22 Feb 2012 17:15:55 UTC | #920794