Flood defenses

Hurricane Katrina's pummeling of New Orleans and the coasts of Mississippi and Louisiana exposed the vulnerabilities and weaknesses of hurricane defense systems that go beyond the scope of engineering alone. Scientists now agree that another cyclic uptick has begun that will spawn more and greater storms, possibly over the next 50 years and their effects will be compounded by the sea level that has been rising an estimated 2.2 millimeters per year.