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| - March 16th, 2007 at 4:59 PM Now I am just wondering, if sulphate pollution from the 1940???s to the 1970???s caused global cooling during that period, but was fixed with Clean Air acts of the 1970???s, why isn???t pollution from China, India, Mexico, Russia, and other parts of the world, which have no clean air acts, doing the same ?
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