How many does it take to change a light bulb?
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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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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Lock in the savings
Sealing air leaks around windows is an easy way to reduce energy waste
About 30% of a home’s heating energy is lost through inefficient windows. Caulk and weatherstrip windows to seal air leaks. When running your home heating system, lock all operable windows to ensure the tightest seal possible.
Source: energy.gov