Let’s look at the two lamps in my office as an example, which use a 13-watt LED bulb and a 19-watt compact fluorescent lamp, or CFL, bulb. For easy math let’s say I work eight-hour days five days a ...

CLEVELAND, Ohio — There are two kinds of people. Those who seem to never turn the lights off when they leave a room, and the sane people who follow them around to make sure every lamp in the house isn ...