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 ...

These particles can also cross the placenta, where they can reduce an infant’s lung function before birth. A pre-polluted baby is also more likely to arrive prematurely, and at a lower weight.

The authors do not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and have disclosed no relevant affiliations beyond their ...

For years, the Environmental Protection Agency has assigned a dollar value to the lives saved and the health problems avoided through many of its environmental regulations. Now, that has changed. The ...

Breathing polluted air—even at levels considered “safe”—may quietly damage your heart. A new study using advanced MRI scans found that people exposed to more air pollution showed early signs of ...