Chinese Smog Reaches All the Way to Los Angeles

Pollution doesn’t pay attention to national boundaries, so there’s nothing stopping China’s smog from drifting back across the Pacific Ocean to plague Los Angeles. And that’s just what’s happening, according to a new study published in the Proceedings of the National Academy of Sciences. Researchers from China, Britain, and the U.S. estimate that emissions from Chinese factories add up to an extra day of unhealthy air quality per year in the Hollywood Hills.

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