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Aquaponics, a system of farming that uses no soil, also uses far less water than traditional agriculture. But while the technique is gaining attention, it remains a very niche way to grow produce due to economic limitations. Special correspondent Cat Wise reports from Half Moon Bay, California.
View the full story/transcript: http://www.pbs.org/newshour/bb/aquaponic-farming-saves-water-can-feed-country/#transcript
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