Lighting stores offer a dizzying array of lamps–pendants, sconces, chandeliers, ceiling lamps, table lamps, desk lamps, floor lamps, recessed cans, track lights, and on and on. What makes a lamp green? For the most part, it’s the amount of energy it uses–and that primarily depends on the type of bulb and how much time the lamp is on. So pay attention to those factors, and while you’re at it, be thoughtful about the lamps you choose and where you use them.
