Jul 14, 2008 9:34pm
Towers of Food Slide Show: Farms in the sky gain new interest. “You want people to say, ‘I want that in my backyard,’ ” says Dr. Dickson Despommier, a professor of public health at Columbia. Towers of Food Slide Show: Farms in the sky gain new interest.

“You want people to say, ‘I want that in my backyard,’ ” says Dr. Dickson Despommier, a professor of public health at Columbia.

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