lighting efficiency

Spurred by U.S. government regulations requiring improved lighting efficiency by 2012, researchers around the country are successfully turning the old, energy-burning incandescent bulb into a more efficient source of light.  The New York Times reports that one company has already succeeding in producing incandescent bulbs that are 30 percent more efficient than older bulbs, which have changed little since the days of Thomas Edison and produce far more heat than light.