LED or Light-emitting diode bulbs are household things these days. These have become the dominant technology for lighting thanks to their energy efficiency and long life values. There’s no doubt that ...

They last much longer, can be dimmed and produce light in a variety of colors. By Arlene Hirst This article is part of our Design special section about making the environment a creative partner in the ...

Yes, LED lights can still emit some UV rays, though our sources don't consider the levels from nail dryers dangerous.

British inventors began experimenting with electric lighting in the 1830s, working on so-called arc lamps, while other scientists around the world focused on developing a functioning incandescent lamp ...