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Towering above the crowd, Rik Kretzinger’s PVC aquaponics tower supports a garden of little plants — strawberries, chives, and cilantro, in this case — on the waste of a few fish, broken down by bacteria. AGponics, as its called, is a modular system, so many of these towers can be lined up and controlled by Arduino with the help of sensors in the tower. Really, it’s a robotic farm, says Kretzinger, complete with internet connectivity so it can email him if something goes wrong.

Nathan Hurst

Nathan Hurst is an editor at MAKE. He loves anything having to do with science or bicycling. He tweets as @nathanbhurst.

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