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.
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Energy Efficiency Tip
When using your laptop computer at home, put the battery charger (an AC adapter) on a power strip that can be turned off. The transformer in the charger draws power continuously, even when the laptop is not plugged in.