Parts of San Francisco and Los Angeles are sinking into the sea — meaning sea-level rise will be even worse

A photograph of waves lapping at the shoreline of Marshall's Beach in San Francisco with the Golden Gate Bridge in the background. .

Parts of California's coastline around Los Angeles and San Francisco are sinking, which means sea levels could rise more than twice as much as previously predicted in those areas.

Scientists at NASA and the National Oceanic and Atmospheric Administration (NOAA) came to that conclusion after using satellite radar to study ground elevation along the coast of California.