Tens of thousands told to evacuate after a 34,000-gallon tank of methyl methacrylate leaked at an aerospace plastics facility, sending potentially toxic vapors into the air.

The worst threats from a damaged chemical tank in Southern California have passed, with authorities saying a major explosion was no longer imminent, but evacuations are still in place amid continued r...

Mandatory evacuation orders issued for nearly 50,000 Orange County residents in the communities of Garden Grove, Buena Park, Anaheim, Stanton, Westminster and Cypress were reduced on Monday after offi...