 According to the National Oceanic and Atmospheric Administration, coastal counties in the United States account for just 10% of the land mass, but 40% of the population. Other remedies, such as seawalls, offshore breakwaters, groins, jetties, and well-built revetments, offer similar but equally temporary protections. Weather scientists and researchers are suggesting another approach, managed retreat. This affords a measure of control for local communities that might otherwise be unattainable.