Replacing a light bulb used to be simple. But now that old models of incandescent bulbs have been phased out, we’re swamped with choices. How do we know whether to buy an LED, CFL, or halogen ...

Households can reduce their energy bills and cut their contribution to greenhouse gas emissions by switching to more efficient lighting, but what’s the best strategy to maximize savings in cost, ...

Every time I’m on the TODAY Show, I say hi to Matt, Ann, Al and Meredith, I shake hands with my producer, and then I bow down and give thanks to the man who is by far the most important person at the ...

As of Jan. 1 of this year, the 60-watt incandescent light bulb—that classic of the genre; the Edisonian ideal; the signifier that illuminates in your mind’s eye when you’re asked to picture “a light ...

LED light bulbs are getting cheaper and more energy efficient every year. So, does it make sense to replace less-efficient bulbs with the latest light-emitting diodes now, or should you wait for ...

If the strain you’re growing now is the same one you grew in the past, then it’s likely that your bulb needs replacing. HID (High Intensity Discharge) grow bulbs such as HPS (High-Pressure Sodium and ...