I know, that's why I put the word 'Global Warming' in bold in the first paragraph. The same thing is happening to Houston, Texas...subsidence. The federal government has already bought out some neighborhoods that have sunk there.
Why??? All of New Orleans is now below mean sea level. Hasn't stopped the city. There is this little-known invention made by the Dutch a few hundred years back, called "dikes" (note--NOT female homosexuals who think they're men)--also called "levees" in Louisiana.