"The people who designed these places, maybe eighty, a hundred years ago, they had the idea they'd make 'em as self-sufficient as possible. Make 'em grow food.

"The people who designed these places, maybe eighty, a hundred years ago, they had the idea they'd make 'em as self-sufficient as possible. Make 'em grow food. Make 'em heat themselves, generate power, whatever. Now this one, you drill far enough down, is sitting on top of a lot of geothermal water. It's real hot down there, but not hot enough to run an engine, so it wasn't gonna give em any power. They made a stab at power, up on the roof, with about a hundred Darrieus rotors, what they call eggbeaters. Had themselves a wind farm, see? Today they get most of their watts off the Fission Authority, like anybody else. But that geothermal water, they pump that up to a heat exchanger. It's too salty to drink, so in the exchanger it just heats up your standard Jersey tap water, which a lot of people figure isn't worth drinking anyway." Finally, they were approaching a wall of some kind. Bobby looked back. Shallow pools on the muddy concrete floor caught and reflected the limbs of the dwarf trees, the bare pale roots straggling down into makeshift tanks of hydroponic fluid. "Then they pump that into shrimp tanks, and grow a lot of shrimp. Shrimp grow real fast in warm water. Then they pump it through pipes in the concrete, up here, to keep this place warm. That's what this level was for, to grow 'ponic amaranth, lettuce, things like that. Then they pump it out into the catfish tanks, and algae eat the shrimp shit. Catfish eat the algae, and it all goes around again. Or anyway, that was the idea. Chances are they didn't figure anybody'd go up on the roof and kick those Darrieus rotors over to make room for a mosque, and they didn't figure a lot of other changes either So we wound up with this space. But you can still get you some damned good shrimp in the Projects ... Catfish, too." -- Count Zero, William Gibson