Once upon a time, buying a lightbulb meant choosing an incandescent one of between 25 and 100 watts, depending on how bright you wanted the light to be and the fixture you were putting it in. You ...

Anybody replaced their old recessed lighting fixtures with an LED module? I just bought a house and there are three of these, two in a hallway downstairs and another one in the landing at the top of ...

This article was featured in One Great Story, New York’s reading recommendation newsletter. Sign up here to get it nightly. The lightbulb was flickering over my head. Not the idealized cartoon ...

New efficiency rules, more than a decade in the making, have taken effect, relegating Edison’s glowing orbs to the history books. By Hiroko Tabuchi Hiroko Tabuchi has reported on the climate toll of ...