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Urban Agriculture
Castles in the Sky?
By 2050, there will likely be two billion more people. Feeding them the way we do now would require immense amounts of agricultural land we don't have. But 70 percent of people will live in cities -- so why not grow food there, where they live? Urban farms can be found today in yards, roofs and balconies. Some have even proposed farming skyscrapers!
Tray elevator in central tower lifts seedlings to the top; mature plants are harvested at the bottom.
Spiral structure allows light in from any angle.
Thousands of [plants are grown in pots and moved down the ramp as they grow.
Trays and pots are disinfected and reused; excess water and nutrients are recycled. |