We recently devoted an episode to exploring LED light pollution in one of Germany ... London are LED lights and they are more on the blue spectrum. They're actually quite bright.

Light pollution—the needless shining of bright ... leaving the rest of the spectrum free of contaminating light. Shielded low-pressure sodium lamps are used, for instance, in the city of Tucson ...

Bay Lights 360, a project by nonprofit Illuminate to permanently place 50,000 LED lights on the 1.8-mile western span of the bridge, is already under way after crews began installing lights ...