In January of 2003, I sat in Joe Kelley's seminar at the University of Maine as he foretold the devastation that was to come to New Orleans. I'd never heard this chilling story before and listened intently as he explained that as far back as when The Big Easy flooded in the 1920's, scientists realized that the Mississippi Delta would continue to change its course (rivers have a habit of doing that you see). I began to understand that over time, the already vulnerable city faced increasing...