“This mega village houses half a million people. With a very small footprint and the majority of travel in and out done by air, this building has very little negative impact in the surrounding environment.” check http://forums.cgsociety.org/showthread.php?t=606846
Great Picture, and isolating the city in the air is a logical solution if you do not wan’t the human race to touch the ground (earth).
But maybe we should veer more
sharply away from thinking in terms of a “trade-off” between people and the environment? The solution seems teribly closed, terribly oriented to local, place-specific, closed system.