It is difficult to distinguish between fog and smoke. But if you go inside and feel the particles sink over your head, the fog will be cold and the smoke will be hot. There was something very ...

A "smoky umbrella" blocked the sun's rays and worsened air pollution in New York and New Jersey during the event. Here's how.

In this study, researchers used an integrated assessment model to investigate the damages caused by ambient PM2.5 from smoke from wildfires and prescribed burns in census tracts across the ...