This Farm of the Future Uses No Soil and 95% Less Water
As urban populations continue to rise, innovators are looking beyond traditional farming as a way to feed everyone while having less impact on our land and water resources. Vertical farming is one solution that's been implemented around the world.
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This is simply not feasible on a large scale. The water and light are free and 100% sustainable outdoors. Indoors? Heating, cooling, insect problems, light (produced by fossil fuels, and inefficiently at that). This will serve a niche market for fresh greens close to large cities where the rich can afford the price. Even figuring in the cost of transportation from the field, this looses out. https://www.youtube.com/watch?v=ISAKc9gpGjw