"The Environmental Protection Agency has granted California a Clean Air Act waiver allowing the state to set new standards to control emissions of various pollutants, including greenhouse gases, for passenger vehicles through 2025."

"California Energy Commission staff on Friday said BrightSource Energy's proposed 500-megawatt Hidden Hills solar thermal power project would have 'significant' impact on the environment."

"LOS BANOS, Calif. — The Morning Star Company’s three plants in California emit roughly 200,000 metric tons of carbon dioxide into the atmosphere each year — about the same amount as the Pacific Island nation of Palau — as they turn tomatoes into ketchup, spaghetti sauce and juice used by millions of consumers around the world."

"After 25 years, the U.S. Fish and Wildlife Service decided to end its program of relocating the mammals, calling the effort a failure. Fishermen complain."

"Wading into one of the hottest environmental debates in the nation, California on Tuesday released its first-ever regulations for hydraulic fracturing, or "fracking," the increasingly common -- and controversial -- practice of freeing oil and gas from rock formations by injecting chemicals under high pressure into the ground."

"SIMI VALLEY, Calif. -- Lingering radioactive contamination exists at a former rocket test lab outside of Los Angeles that was the site of a partial nuclear meltdown, federal environmental regulators said Wednesday."

"Interior Secretary Ken Salazar's decision last week to close down Drakes Bay Oyster Co. was years in the making, costing his agency millions of dollars in research and potentially damaging the reputation of the National Park Service."

"About two months after the state's environmental agency ordered a major pet products retailer to immediately cease selling unregistered pesticide products, many of those products remain on the retailer's shelves and website."

"During the fall campaign, California's attention was focused on the presidential race and Gov. Jerry Brown's tax measure. But in a historic, largely overlooked environmental shift, the state's voters also triggered a multibillion-dollar tidal wave of new green spending."