Have an old industrial building with a large roof lying around? Probably not, but if you do Urban Farms will deliver a full-scale rooftop garden–aquaponics system. The package is a modular system and includes a greenhouse, a modified shipping container that could be used as an office or kitchen, and a fire escape ladder so you can easily access you rooftop growing space. The aquaponics–garden hybrid takes up 400 square meters and can grow 5 tons of veggies and 1800 pounds of fish. | Learn more about the Urban Farms product on Fast Company