wonder, structure, lush, long gone, drain, rise, soar, equivalent, spring up, vertical farming, nutrients, food shortage, environmentally friendly, powered, transport costs, local produce, permanent light source, industrial greenhouse, mankind, horizontally , consume, convert, wasteland, Gardens of Babylon, lush green gardens, consumer society, to drain the world of its resouces, the population rises, food prices soar, in your neighbourhood, according to UN, require, extra farmland, agricultural land, real challenge, the produce, in a solution of nutrients and water, point out, provide, offer a solution, however, fossil fuels, skyscraper, crops, farther away, direct sunlight, top one, possible solutions, include, convert the rooftops, community farm, solar panels, wind turbines, different storeys.

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