*Mostly because you just leave it in some graffiti-scarred parking lot, and nobody has to do any actual dirty, time-consuming "farming." It runs on graywater out of people's toilets. Hello, Favela Chic.
*Of course, you don't actually eat these crops yourself, because the neighborhood kids would steal them, but that's okay; you're not paying any attention anyway. They're a kind of vegetable freeware. It would be awesome to see them mounted vertically on walls.
http://www.n55.dk/MANUALS/CITY_FARMING/CITY_FARM.html
*City people, do yourself a favor, and don't flee out to the ashram to become some redneck libertarian self-sufficiency hick. These refuseniks have been out there for centuries, and they've never accomplished anything you have ever heard about or cared about, ever.
