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A slow-motion environmental disaster is playing out in a small town north of Los Angeles. Mireya Villarreal reports from Porter Ranch, where homeowners are filing lawsuits against Southern California’s gas utility company over a methane leak that made them sick. (CBS News Videos)

After 75 days of a massive methane gas leak, Gov. Jerry Brown has declared a state of emergency in California. While federal funds will now be available, Brown says the gas company will pay for the cost of fixing the leak. Mireya Villarreal reports. (CBS News Videos)

Infrared image released by the Environmental Defense Fund (EDF) shows methane gas leaking from the the Southern California Gas Company’s (SoCalGas) Aliso Canyon site near the Porter Ranch suburb of Los Angeles (AFP Photo/Environmental Defense Fund/AFP/File)

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