Bright Ideas: Lunar-Resonant Streetlights Only Shine When the Moon Doesn't - Gizmodo
It's just a concept but these streetlights use LEDs to save energy and dim when there's a full moon to save even more energy. Why not take it a step further and keep them almost entirely dimmed unless there's motion?!?
Street lights are a real obvious waste of energy when flying over cities at night or early in the morning. They are put in place to stop crime, right? Well make the criminals walk really really slowly if they don't want light. Plus streetlights ruin viewing of stars!