Conversation: Vertical Farms to Solve Future Food Crisis

Columbia University professor Dickson Despommier says that his Vertical Farm Project could save the world as the swelling global population begins to overwhelm the food supply. In his book "Vertical Farm," Despommier explains that a series of greenhouses stacked on top of each other and placed in urban environments could provide a sustainable source of food as more people migrate into cities. Despommier predicts that within 20 years, 80 percent of the world's population will live in...Full Story
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