More than 20 California cities listed as having "unhealthy air"

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Опубликовано 20 ноября 2018, 1:38
California wildfires created dangerous levels of air pollution across the state. The toxic air could have short-term and long-term health impacts on residents. Ed Avol, a professor of clinical medicine at the University of Southern California, joins CBSN to discuss the air quality and its effects.
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