How many NC State engineering students does it take to replace an inefficient light bulb with an energy-efficient one?
Five: Three to design a nuclear-powered light bulb that never needs changing, one to install it, and one to write the computer program that controls the wall switch.
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Does your home have a window air conditioner? Make sure that your window unit is properly weather stripped, and clean the filter monthly. Keep “fresh air” vents on window A/C units closed.
Source: Touchstone Energy® Cooperatives