The way skeptics see it, Dickson Despommier has a lot of explaining to do: He’s got big plans for the future of farming. By 2050, the planet will have to feed three billion additional mouths, and traditional farms, which threaten food security by deforestation, the use of fossil fuels and ecosystem destruction, will not be able to hack it. Dr. Despommier, an environmental health scientist at Columbia University, believes the answer lies in the vertical farm, a glass-walled structure that can be designed as tall as a typical skyscraper, and can be located inside city bounds or around city limits.
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