Blackout demonstrates need for stronger measures than Bush's Clear Skies
Something extraordinary took place around August 15, 2003. In the valleys of Pennsylvania, the air was substantially cleaner than it had been just 24 hours earlier. Sulfur dioxide levels decreased by more than 90 percent, smog (ground-level ozone) levels about 50 percent, and light scattered by particles (a standard measure of soot and other pollutant particles in the atmosphere) by 70 percent. Atmospheric visibility -- how far the naked eye can see -- increased by over 20 miles, more than the distance from New Haven to Bridgeport, and about the distance from New Haven to Long...
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