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Photo Of The Day: Urban Farming

Andrew Fernitz, a partner in 312 Aquaponics, holds a net containing tilapia in an old meat-packing plant where the business has taken up residence, in Chicago. Water containing waste from the fish is used to fertilize greens, which filter out the nutrients before the water is returned to the fish.

Apr 9, 2012

(AP) — In this Feb. 29, 2012 image made from video, Andrew Fernitz, a partner in 312 Aquaponics, holds a net containing tilapia in an old meat-packing plant where the business has taken up residence, in Chicago.

Water containing waste from the fish is used to fertilize greens, which filter out the nutrients before the water is returned to the fish. (AP Photo/Martha Irvine)