Buying light bulbs ... type. "LED light sources with good color characteristics are now commonly rated for 120-150 lumens/watt," McGowan says. That's ten times more than an incandescent.

Studies have shown that exposure to warm, yellow-toned light commonly associated with incandescent bulbs can help regulate ...

LED bulbs are still more expensive than incandescent bulbs; however, prices are constantly decreasing. Companies continue to experiment with numerous designs. For example, when red, green and blue ...

The ultimate goal for LED-based white lighting is to replace all incandescent bulbs and compact fluorescent lamps to provide an energy-efficient and long-lasting option for everyday use.