Chris Abel, 2010
CTBUH Journal 

The effect of food and water shortages on the future growth and form of cities as current sources are impacted by climate change may also turn the economic and political tide decisively in favor of vertical farming. Urban authorities could eventually be compelled to make space for and to control food production in cities to ensure adequate supplies.The growing use of intensive farming techniques such as hydroponics and aeroponics, which greatly increase the efficiency of food production whilst reducing the amount of water and space required, will also ultimately help to lower costs. The approach to vertical farming proposed by Chirs Abel is to create flexible spaces for food production within large scale, mixed-use developments where opportunities exist for offsetting the higher costs of providing space for one function against the lower costs of another. This has been combined with on-site systems of water collection and power generation

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