Richard E. Peltier is an associate professor of Environmental Health Sciences at the University of Massachusetts Amherst. Not a day seems to go by without a story of an "airpocalypse," usually ...

Air in the U.S. has gotten cleaner for decades, adding years to people's lives and preventing millions of asthma attacks, but nearly half of Americans still live with unhealthy air pollution, a new ...

Not a day seems to go by without a story of an “airpocalypse,” usually somewhere in a developing nation. It’s hard not to empathize with the people in the smoggy images of New Delhi or Ulaanbataar or ...

The Interstate 5 Bridge stretches across a hazy Columbia River on Tuesday, Sept. 18, 2022, as seen from the Vancouver Waterfront. Smoke from the Nakia Creek Fire and a morning layer of fog pushed air ...