Stephen Colbert interviews Columbia University professor Dickson Despommier about how growing food in vertical towers could be the answer to the food crisis. Vertical farming, which uses hydroponics technology, allows for better control of the growing environment and puts food within the city limits, cutting down on food transportation costs... "Plus, it's pleasantly phallic," adds Colbert. Watch the video after the jump.
Dickson Despommier Interviewed on 'The Colbert Report'
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