The farm town of the future is visible long before you reach the city limits, thanks to a pair of wind turbines rising as high as the Statue of Liberty above the flat terrain. They pump cheap electricity into the local grid, providing the energy to make carbon-neutral fertilizer. Closer in, cows graze next to solar panels that provide them with shade. A county-wide compost operation disposes of food and agricultural waste, electric buses take kids to school, the public library relies on geothermal heating and even a city-owned liquor store has rooftop solar panels. (The shop motto: “We chill your beer with the sun.”)