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How Does a 3D Printer Work?

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3D printing has made it possible to print out almost anything - including homes, medical devices, clothing, and even a human heart! But how does a 3D printer work, and what are the drawbacks?

How Houseflies Work

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Though houseflies scavenge and carry disease, houseflies also provide food for the local ecosystem. Learn why houseflies love the great indoors.

How Walkie-talkies Work

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Walkie-talkies have been used for decades to communicate in situations where other options won't do the trick. Learn how walkie-talkies work.

10 of the Most Binge-watched TV Shows

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91 percent of people binge-watch television. Learn which 10 TV shows are the most binge-watched at HowStuffWorks.

How Quantum Computers Work

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Quantum computers use the power of atoms to perform memory and processing tasks. Learn why quantum computers will be faster than silicon-based computers.

How Porta-Potties Work

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Using a portable toilet at an outdoor concert or festival might be disgusting. But it sure beats going in a field! Now, imagine if your job were to clean out those suckers.

Air conditioning has fundamentally changed how people experience the world. When it's hot outside, walking into an air-conditioned house is like walking into another season. How do air conditioners keep us cool?