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How Aerosol Cans Work

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They dispense everything from hairspray to cleaning products to whipped cream. Without them, you'd be doing a whole lot of pumping.

The light bulb hasn't changed a whole lot in its 120 years -- the original design was just that good. Apparently, you can throw together a filament, a glass mount, an inert gas and a bit of electricity and change the world. Learn what happens when yo

How a Circuit Breaker Works

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Circuit breakers are an essential safety component in any home electrical system. Learn about home circuit breakers and breaker design.

How Interplanetary Internet Will Work

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Can the Internet stretch out to planets like Mars? Learn how it will!

How California's Power Crisis Works

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Another series of rolling blackouts are hitting California. Learn why this is happening and how it affects you.

How Black Holes Work

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A black hole occurs when a massive star dies -- its enormous mass implodes and becomes so heavy that it bends space. So how do astronomers detect something that they can't see?

How Movie Distribution Works

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Our series on movie theaters concludes with movie distribution. Learn how movies make it to your local theater and how money flows back to the studios!

How Space Collisions Work

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Space collisions happen when stars, asteroids and even galaxies smash into one another. Learn what space collisions look like and what the results are.