Dirty Air Kills 30,000 Americans Each Year

THURSDAY, July 25, 2019 (HealthDay News) -- Despite improved air quality since the 1990s, pollution still causes lung disease, heart attacks and strokes that kill more than 30,000 Americans each year, a new study estimates.

Researchers looked at concentrations of fine pollution particles known as PM2.5 across the country from 1999 to 2015. These tiny particles -- 30 times smaller than the width of a human hair -- come from the combustion of cars, coal-fired power plants and other industrial sources.