P EOPLE ARE dying for clean air. According to the most recent estimates from the Institute of Health Metrics and Evaluation ...

A new study has revealed a significant shift in the sources of nitrogen oxides (NOx) pollution in central London, with gas ...

Cities in California, Texas and Arizona are expecting air quality to become unhealthy for sensitive groups on Thursday.

The decision bought officials time to avert economic harm, but raised concern from health advocates about the continued impacts of ozone on Arizonans.

A third of Americans still breathe unhealthy air after decades of improvements—which the Trump administration wants to roll ...