A new study finds living in areas with high levels of air pollution, especially small particulate matter, may increase your risk of developing breast cancer.

The American Lung Association’s annual “State of the Air” report finds 120 million people in the U.S. live in communities with unhealthy levels of ozone levels or particle pollution.

Warmer temperatures and decreased air quality are making allergy patients suffer more than they did in past decades, according to the American College of Allergies, Asthma & Immunology.

School districts that replace older diesel buses with cleaner vehicles see bump in school attendance, researchers discover.

Researchers discover a link between find particulate matter and an increased risk of dementia -- even when exposure to the pollutant is less than what’s allowed by the EPA.