Almost half of everyone who lives in the United States breathes unhealthy levels of air pollution, according to the American Lung Association’s annual State of the Air report, released Wednesday.

A new report on air quality across the United States offered a cloudy prognosis on the long-term health of about 156 million residents who live in areas that received an "F" in smog and soot pollution ...

The air inside your home may be five times dirtier than the air outside and this issue worsens in winter. I asked air quality specialists about common culprits for indoor air pollution Pamela is a ...