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riffraff
on March 25, 2015
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China used more cement in 3 years than the U.S. di...
it was on HN a few times
http://www.bloomberg.com/bw/articles/2013-06-14/ancient-roma...
but AFAIR, the conclusion was "we actually always knew, it's just that it takes too long".
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but AFAIR, the conclusion was "we actually always knew, it's just that it takes too long".