State of the Air report gives many counties in central PA a failing grade for air quality; a stark decline from previous ...

Missouri and Illinois residents living near large cities were exposed to unhealthy ozone and pollution over the past year.

Ozone air pollution, sometimes known as smog, is one of the most widespread pollutants in the United States. It is a powerful lung irritant. When inhaled into the lungs, it reacts with the delicate ...