The U.S. Fish and Wildlife Service is taking steps to list monarch butterflies as threatened species and designate seven ...

Scientists are racing to restore Clear Lake, California's largest freshwater lake, which has been struggling with algal ...

California wildfire cleanup is complicated by highly combustible lithium-ion batteries found in electric and hybrid vehicles ...

Four cities in Southern California are opposing an EPA processing site for "hazardous" waste from Los Angeles County's ...

Secretary of Transportation Sean Duffy immediately moved to roll back fuel efficiency standards moments after being sworn in ...

The waiver allowed California to enforce its Advanced Clean Car program that requires auto makers to produce more ...

The future of EVs might hinge on a decades-old air pollution law. Whether the law is upheld will have ramifications far ...

When a massive fire erupted at one of the world's largest lithium-ion battery storage facilities in Monterey County, it ...

What authorities described as one of the largest lithium-ion battery cleanups ever is underway in Los Angeles County ...

President Donald Trump on Monday issued a memorandum directing the Secretary of Commerce and the Secretary of the Interior to develop a new ...

Trump's administration asked the U.S. Supreme Court to pause its review of a case involving California’s stricter vehicle ...

President Donald Trump’s Environmental Protection Agency is considering rescinding California’s permission to tackle climate ...