This field has 1,301 florescent bulbs planted in it, and they're all glowing. They aren't plugged into anything, however; they're powered solely from the magnetic fields produced by the power lines above. It's all a large art project by Richard Box, and if you're really interested in it you can order a DVD of the whole thing from him. If you're cheaper and less interested, just peruse our gallery for the cool shots.
[Project Page via GadgetLab]