Arcology may sound like a made up word - probably because it is. A hybrid of architecture and ecology, it is essentially a mega city which packs a ginormous population into one hyperstructure - think Death Star, Zion in The Matrix or the Anthill of Antz fame. Now, a real-life group of ambitious designers has taken their looming pyramidal arcology and placed it smack dab on the Mississippi River as a proposal for the rebuild of New Orleans which is currently in progress. This 30 million square foot beast-building with an array of green features is aptly named NOAH (Get it? Noah and the Arcology?), and is meant to house 40,000 mostly human residents.