How serious is Norway about climate change? So much that its streetlights self-dim

Self-dimming streetlights in Hole, NorwayAs children, we're all taught to turn off the lights behind us as we leave an empty room. But it seems Norwegians have taken that lesson one step further. Along a 5.5-mile stretch of road in Hole, Norway, smart streetlights automatically dim when nobody's around—then come back to full power when a car, pedestrian, or other object approaches...