Vertical farming is a concept that argues that it is economically and environmentally viable to cultivate plant or animal life within skyscrapers, or on vertically inclined surfaces. The idea of a vertical farm has existed at least since the early 1950s and built precedents are well documented by John Hix in his canonical text "The Glass House"... The third category vertical farming was made by American ecologist Dr. Dickson Despommier. http://en.wikipedia.org/wiki/Vertical_farming
The study “THE VERTICAL FARM: Food Production of the Future” (2004, in PDF) also known as “Feeding 50,000 People” proposes a vertical farm building 18 stories tall situated on a large New York City block (250 ft x 1000 ft) could feed 50,000 people. This boils down to about 8.4 square meters per person.
Jun'2012: Despommier's satisfaction was evident as he showed pictures of existing vertical farms during a talk at the World Science Festival's "Innovation Square" event on June 2. The most futuristic farms exist in Asian countries such as South Korea, Japan and Singapore where crowded cities and scarce land make vertical farming most appealing. "I wish we were the world's leader in this, but right now it looks like Korea and Japan are light years ahead of us," Despommier said.
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