The ultimate inside story: how bureaucracy, politics, and a disregard of science combined to crippleperhaps forevera great American city As deputy director of the Louisiana State University Hurricane Center, Ivor van Heerden had for years been warning state and local officials about New Orleanss vulnerability to flooding. But like Cassandras, his predictions were ignoreduntil Hurricane Katrina hit on August 29, 2005. Suddenly, van Heerden found himself...