Did you know a hazardous coal byproduct is the secret to stronger concrete? Discover what this waste material is and why it ...

With the return of the strong Santa Ana winds in Los Angeles County, the air quality will be changing quickly, especially for those downwind of the fires. A windblown dust and ash advisory is in ...

Strong winds across parts of Washington state have kicked up volcanic ash deposited during the 1980 eruption of Mount St. Helens, creating hazy conditions and reducing air quality. The phenomenon, ...

Coating concrete with residual ash from burning coal can make it strong enough to withstand hellish conditions — and save governments millions of dollars. Fly ash is an industrial byproduct from coal ...

ST HELENS, Wash. — It may look a bit like it, but Mount St. Helens is not erupting Tuesday morning. The ash you can see blowing around the volcano is actually remnants of the infamous 1980 eruption.

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. ANCHORAGE, Alaska (AP) — A volcano in Alaska ...