Modern day New Orleans was a city that defied the odds. Built on a mosquito-infested swamp surrounded by water, it sits in a bowl 2.5m below sea-level. Its very existence seemed proof of the triumph of engineering over nature.

The storm hits
But on the 29 August 2005 the city took a direct hit from Hurricane Katrina and overnight turned into a Venice from hell. In the chaos that followed the worst natural disaster in American history, a forensic investigation has begun to find out what went wrong and why. Scientists are now confronting the real possibility that New Orleans may be the first of many cities to face extinction.
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http://www.veoh.com/videos/v8960733mtFprxcZ

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