Enough US states have swapped out their old street lights with LEDs that it may be ... Science strongly suggests that heavy doses of light can keep people from falling asleep, and that brighter ...

In one Colorado city, thousands of streetlights are being converted to LEDs. The City of Boulder says this will provide ...

What color are the street lights in your town? While an unfortunate few still suffer under one of the awful colors offered by vapor discharge lamps, like the pink or orange of sodium or the ...