Hours after being sworn in as the new U.S. Secretary of Transportation, Sean Duffy took aim at the main way the federal ...

Air quality in Pittsburgh is improving, according to year-over-year data. Why it matters: Long-term exposure to poor air quality is harmful to your health and has been a problem in Pittsburgh for ...

Air quality in San Diego is improving, according to year-over-year data. Why it matters: Long-term exposure to poor air quality is harmful to your health. By the numbers: The average percentage of ...

Studies show prolonged exposure to poor air quality increases the risk of chronic conditions such as asthma and ...

Residents reported unusual fog occurrences that resulted in adverse health symptoms, like coughing and irritated eyes.