California Governor Gavin Newsom (D) declared a state of emergency on Saturday evening as experts warned that the chemical tank that is overheating in Orange County could explode. 40,000 residents in Orange County, California, were evacuated on Friday amid a chemical leak at an aerospace facility. On Thursday, a valve overheated on a 34,000-gallon tank used to make plastics. Authorities said the tank, located in Garden Grove, could either explode or spill thousands of gallons of toxic chemicals. Several evacuation centers were opened; however, many residents are still refusing to leave their homes. On Friday evening, Orange County Fire Authority...