Days after a wildfire, a type of smoke can linger in the atmosphere that contains tiny, brown, light-absorbing particles known as tar balls. These particles are believed to have a significant impact ...

PHILADELPHIA (WPVI) -- Smoke particles from Canadian wildfires are causing air quality concerns in the Philadelphia region on Tuesday. At least 740 wildfires are currently burning in Canada, with at ...

Wildfires are becoming more frequent and more severe — and where there’s fire, there’s smoke. That smoke can travel thousands of miles. As more people are exposed to wildfire smoke, researchers are ...

Wildfires are spreading through Southern California, and where there's fire, there's smoke — which, research shows, can be as deadly as the flames themselves. Recently, a group of scientists sought to ...

Wildfire smoke is no longer just a short‑lived air quality problem drifting over cities for a few hazy days. New research shows that when these plumes rise high into the atmosphere, they can spawn ...

When fire tore through Los Angeles County in January 2025, westerly winds blew most of the smoke and ash over the Pacific, ...