In cities like New York and across the river in Newark, rooftops and abandoned buildings are underutilized pieces of real estate now being turned into agricultural operations. Can these urban farms address the coming global food crisis, or are they simply a growing business in America? Economics correspondent Paul Solman reports.
View Full Story/Transcript: http://www.pbs.org/newshour/bb/growing-lettuce-new-york-city-growing-business/
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