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06-23-2016, 07:40 AM
Extracting the stuff is a $70 billion industry, but it can inflict terrible costs on the environment.
More... (http://www.nytimes.com/2016/06/23/opinion/the-worlds-disappearing-sand.html?partner=rss&emc=rss)
More... (http://www.nytimes.com/2016/06/23/opinion/the-worlds-disappearing-sand.html?partner=rss&emc=rss)