BBC: Clean-up crews are working around the clock as investigators look into how tens of thousands of gallons of oil spewed into the sea off Santa Barbara.
More than 6,000 gallons (22,700 litres) of oil have been mopped from the beach - a fraction of the 20,000 gallons officials say spilled into the sea after a pipe burst on Tuesday.
Federal officials are to excavate the pipe to find clues to how it ruptured.
The company responsible for the pipeline has publicly apologised.
California Governor...