How many blues musicians does it take to replace an inefficient light bulb with an energy-efficient one?
Five: One to replace the light bulb, and four to play sad songs about how the old, inefficient bulbs went away, and maybe they weren’t so bad after all.
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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.
Source: U.S. Dept. of Energy