How many mystery writers does it take to replace an inefficient light bulb with an energy-efficient one?
Two: One to screw it in almost all the way, then a second to give it a good twist at the end.
Energy Efficiency Tip
Ninety percent of the energy it takes to wash clothes is used to heat water. If you wash in cold water, you could save $40 per year if you have an electric water heater and $30 annually if you have one powered by natural gas.