Sea levels are rising, and that will bring profound flood risks to large parts of the Gulf and Atlantic coasts over the next three decades.
A new report led by scientists at the National Oceanic and Atmospheric Administration warns that the U.S. should prepare for 10-12 inches of relative sea level rise on average in the next 30 years. The rise is due to both sinking land and global warming. And given the greenhouse emissions released so far, the country is unlikely to be able to avoid it.
