LOS ANGELES — In Altadena and the Pacific Palisades neighborhood of L.A., reconstruction has begun despite the fact that the soil on affected properties has not been tested for toxic substances. The ...

Ming Pan is a senior research hydrologist at the University of California, San Diego. Dry conditions across Southern California set the stage for a series of deadly wind-driven wildfires that burned ...

Federal officials have declared they will not order soil sampling after completing debris removal on Los Angeles properties that succumbed to the region’s devastating fires earlier this year, ...