Watch: Pacifica Coastal Erosion

Parts of the Bay Area, officials have already retreated from some parts of the coast, removing homes from cliffs that have eroded and areas that have flooded. San Francisco is taking steps to move the Great Highway away from Ocean Beach because erosion is eating away the earth beneath it. Houses and apartments in Pacifica, south of the city, were declared uninhabitable as cliffs that supported them gave way to erosion.