For years, when the EPA assessed the economic impact of new regulations, it weighed both the health costs for Americans and ...

That cozy winter fire could be doing far more harm than good—wood smoke is a hidden killer in America’s winter air.

Studies have shown that exposure to PM2.5 can cause temporary vascular and blood pressure responses in young individuals, ...

Denver still has air pollution problems, due in part to its geography, which creates temperature inversions that can hold ...

The new rule does not estimate the economic value of health benefits from reducing NOx and other types of air pollution under the Clean Air Act. Critics said the change means EPA will ignore the ...

In New York City, air pollution is unevenly distributed among the city’s neighborhoods, often in surprising ways, according to data from the New York City Department of Health, which tracks several ...

I grew up in rural Colorado, deep in the mountains, and I can still remember the first time I visited Denver in the early ...