The facility, in Colstrip, Mont., used a new E.P.A. system for requesting special waivers from President Trump.

We found four distinct patterns of air-pollution exposure across childhood (see graph below): consistently low (these children had the lowest levels of air pollution throughout childhood) consistently ...

The rate at which the planet is warming has sped up since 2010, and now researchers say that China's efforts to clean up air ...

with just 17% of cities globally meeting air pollution guidelines, a report Tuesday found. Switzerland-based air quality monitoring database IQAir analyzed data from 40,000 air quality monitoring ...

The Washington State Department of Ecology (WSDOE) launched an enhanced air quality monitoring map to make tracking air pollution more ... a location An interactive graph for each site showing ...