Calculating air pollution from wildfires and other events has become more complicated. That doesn’t mean it’s necessarily more accurate.

The smoke may be temporary, but toxic air pollution is an ever-present danger with effects that linger for generations.

"This is our Hurricane Katrina—an epochal disaster that's changing Los Angeles," said Dr. David Eisenman, whose research ...

The fires that have ravaged Los Angeles over the past week were larger and burned hotter than they would have in a world without planet-warming fossil fuel pollution, a new analysis suggests.

As people in Los Angeles return to their devastated neighborhoods, now marked with burn scars and ... the air when it’s a little bit warmer, and then they go back and stick into surfaces or ...

As some people return to the structures spared from Los Angeles ... round particle pollution. It’s been No. 1 for ozone pollution for decades, Pruitt said. With the wildfires now on top of ...