UCLA researchers say last year's Carmageddon improved air quality

Air quality near the closed 10-mile portion of the 405 Freeway reached levels 83% better than typical weekends, according to a team at UCLA's Institute of the Environment and Sustainability.

The reprieve lasted for only one weekend, but UCLA researchers say that last year's Carmageddon closure of the 405 Freeway rid Los Angeles of both traffic and another notorious problem: pollution.

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