Southern California officials have expanded evacuations in several Orange County cities due to concerns over a leaking toxic chemical tank that they say is "actively in crisis."

Gov. Gavin Newsom (D-CA) declared a state of emergency in California on Saturday as thousands of people were forced to evacuate their homes over a toxic chemical tank that, authorities say, will eithe...

Officials have warned since Friday that the tank, which contains methyl methacrylate, a flammable chemical used in plastics and manufacturing, could rupture and spill up to 7,000 gallons (26,500 liter...