Despite improvements in air quality in past decades, 156 million Americans still breathe in too much soot or ozone, says the ...

The American Lung Association has revealed that nearly half the U.S. population resided in areas with dangerous levels of air ...

From her home on Louisiana's "Cancer Alley," Lydia Gerard looks down at her 8-month-old great-granddaughter and wonders if ...

The Trump administration is quietly revoking the temporary legal status of people who entered the country via an online ...

A new report on air quality across the U.S. offers a cloudy prognosis on the long-term health of about 156 million residents ...

“State of the Air” uses letter grades to measure unhealthy levels of ground-level ozone air pollution (also known as smog), ...