As wildfires have burned recently across southern California, the ash from burned trees and brush is lifted in the air, then ...

Urban ash from the California wildfires that has settled across the state has now been found more than 100 miles offshore.

Dr. Barbara Ferrer said residents should assess their homes for soot, ash and smoke contamination before settling back in.

The idea to use volcanic ash came after the Taal Volcano volcano eruption in 2020 – 43 years after its last eruption in 1977.

USC researchers traveled through neighborhoods devastated by the Eaton Fire to run lead tests on ash gathered from gutters and sand pulled from playgrounds. What they found: They found a whole lot of ...