At present, the world’s largest indoor vertical farm is located in Japan, with an area of 25000 square feet (about 2320 square meters), but it is dwarfed by the estimated cost of $30 million (about 6.2 yuan per dollar).

According to the environmental watch website (ecowatch. Com), the air farm will use the latest technologies such as LED lighting, air planting (allowing plants to grow in nutrient rich fog) and climate control to make plants thrive without sunlight, soil and pesticides.

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