Ever inhaled deeply and thought, "Hmm, is oxygen supposed to taste crunchy?" Some cities turn breathing into an extreme sport ...

When I experienced the Southern California wildfires in January, my outdoor and indoor air quality was affected. This was the ...

The haze over parts of Florida from wildfires may not look dangerous, but it can cause severe reactions in some people.

Most of the world breathes unhealthy air. Poor monitoring, industrial emissions, and weak regulations worsen air pollution.

PM stands for particulate matter, a mixture of solid particles and liquid droplets in the air, according to the EPA. It's also called particle pollution ... and shortness of breath, according ...