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September 3, 2015 04:00 pm

WWII Bomb Shelter Becomes Hi-Tech Salad Farm

asjk points out a story of how a World War II bomb shelter, situated 33 meters beneath the streets of London, has been turned into a high-tech hydroponic farm. "The growing system uses energy-efficient LEDs instead of sun, no pesticides, needs 70 percent less water than growing plants in open fields, and less energy than a greenhouse." The computer-controlled environment is designed to shorten the growth cycle of plants like coriander and radishes. They're currently only using about a quarter of the gear necessary to fill up the shelter, but they can produce 5,000-20,000 kilograms of food per year, depending on what they raise. Co-founder Steven Dring said, "We've got to utilize the spaces we've got. There's a finite amount of land and we can grow salads and herbs — which start losing flavor and quality as soon as you cut them — in warehouses and rooftops in cities near the people who will eat them. Use the rural land for things like carrots, potatoes and livestock."

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