University of Southern California researchers say L.A.’s smoggy reputation may need amending: pollution there has declined significantly over the past 20 years, and as a result, its residents are healthier.
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Wed, 03/04/2015 - 3:00pm
University of Southern California researchers say L.A.’s smoggy reputation may need amending: pollution there has declined significantly over the past 20 years, and as a result, its residents are healthier.