[ExI] Old Chemically Mature Galaxies and Fermi Paradox

[Dennis May]

http://www.sciencedaily.com/releases/2011/11/111102092929.htm 
An interesting spin on the Fermi Paradox - 12 billion years ago
there were whole galaxies more chemically mature than our sun.  
About a year or two ago I recall discussion somewhere about 
how we are alone because it has only been recently that sufficient 
chemicals for life were available - according to the Big Bang theory.
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