It took 6,000 years to build Louisiana's coast, and only 75 years for humans to destroy. If major restoration isn't started in 10 years, it ain't gonna be pretty.
See my series (with Bob Marshall) in The Times-Picayune, and don't forget to look at and listen to Dan Swenson's amazing interactive graphics and listen to the audio accompanying Ted Jackson's moving photos.
http://www.nola.com/speced/lastchance/