If you've been to a hardware store lately, you know that the big thing in lighting is no longer compact fluorescents, but LEDs. America's cities have noticed, too, and they're in the process of ...

NASHVILLE, Tenn. (WTVF) — Little by little, new LED lights are replacing 55,000 traditional streetlights in Nashville. Nashville is installing new LED streetlights to make residential streets and main ...

Early in December, “Peppermint the Elf” said, she opened the door of a Chicago Transit Authority bus for a commuter in a suit and tie. The man boarded the bus, awash in red and green light. The poles ...