Buying lightbulbs used to be a cinch. When your 60-watt incandescents burnt out, you simply bought more 60-watt bulbs. But incandescents wasted a lot of energy to create that warm glow and were phased ...

Now that incandescent lightbulbs have largely been replaced by energy-saving LEDs and CFLs, a trip down the lightbulb aisle can be confounding. Not only are the lightbulbs different but the terms used ...