Nearly half of all Americans — 137 million people — are experiencing more days of “very unhealthy” and “hazardous” air quality than in the previous two decades combined, according to a report published this week by the American Lung Association.
Nearly half of all Americans — 137 million people — are experiencing more days of “very unhealthy” and “hazardous” air quality than in the previous two decades combined, according to a report published this week by the American Lung Association.