Cool Idea: NYC's Floating Farm

Since more than half of the world's population now lives in cities, it makes sense that we try to grow more of that food within the cities themselves.

Enter the Science Barge. The barge uses a system of recirculating greenhouse hydroponics to grow tomatoes, lettuce, cucumbers, and peppers. Hydroponics doesn’t use soil, and the barge irrigates with rainwater and river water. The Science Barge itself is powered with solar, wind, and biofuels.