Many Americans live where it is unsafe to breathe. About 40% of the U.S. population — more than 126 million people — live in areas that do not comply with national ambient air quality standards.
This public health problem poses a particular threat to Latinos, who are exposed disproportionately to high levels of the main pollutants that can aggravate asthma: ozone and fine particulate matter. READ MORE AT LOS ANGELES TIMES
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