It’s a crazy thought, but as populations grow and more buildings are built and farmland becomes less and less eventually there could be a food shortage. Estimates say world population will be 9 billion by 2050 and we will need 60 percent more food. Farmland is shrinking and we need to figure out how to make more food on less land.  Farmer Dave Smiles, the founder of Uriah’s Urban Farms, has the answer: Go vertical.  

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