California gas leak: more than 13,000 flee their homes
27 January 2016 Last updated at 00:00 GMT
Residents in California who claim they are being made sick by a natural gas leak from an underground storage facility are calling for it to be shut down.
They have been backed by environmental activist, Erin Brockovich, who said that failing infrastructure and weak regulation are to blame for the leak in Porter Ranch near Los Angeles.
James Cook reports.