Urban agriculture projects are nice community exercises, but they aren’t commercially viable, and really aren’t that safe—one study found hazardous levels of lead in half of the root vegetables grown in New York City’s community gardens. Growbot is a modular planter box that solves all these problems. The soil is raised and isolated so food is safe, the boxes are smart and cloud connected so they can be monitored remotely, and the yields are impressive, a group of 16 boxes can produce about 5 tons of lettuce per year. Growbots are still in the early test phases but will hopefully be commercially available soon.