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How Red-light Cameras Work

auto.howstuffworks.com/car-driving-safety/safety-regulatory-devices/red-light-camera.htm

The light turns red. You're alone at the intersection. There's not another car in sight. Do you run it? Read this before you answer.

Could You Dig a Tunnel Right Through the Center of Earth?

science.howstuffworks.com/environmental/earth/geophysics/question373.htm

Let's say you have a lunch date to make - and it's on the other side of the planet. Wouldn't it be convenient to pop down a hole through Earth's innards? But what would really happen if you did?

How Space Tourism Works

science.howstuffworks.com/space-tourism.htm

The space tourism industry offers people a way to take the ultimate vacation. Learn about space tourism and find out how you can become a space tourist.

What Does a Camshaft Do?

auto.howstuffworks.com/camshaft.htm

Camshafts have a great effect on engine performance. Learn about camshafts, single and double overhead cams, pushrod engines and camshaft design.

How Power-line Networking Works

computer.howstuffworks.com/power-network.htm

No new wires! Power-line networking uses the wiring already in your house to connect your computers. Learn about the pros and cons of a power-line network and how to set one up.

Hypersonic Speed Explained: How Hypersonic Planes Work

science.howstuffworks.com/transport/flight/modern/hypersonic-plane.htm

Higher, farther, faster: NASA's X-43A plane is destined to set new speed records. What sets the X-43A apart from other rocket-powered aircraft is that it is powered by a scramjet engine. Learn all about it.

What Does a Humidifier Do? How Humidifiers Work

home.howstuffworks.com/humidifier.htm

Is the air feeling a little too dry in your home? A humidifier can help make things more comfortable -- and even save a little wear and tear on your house. But what does a humidifier do, exactly?

How Solar Sails Work

science.howstuffworks.com/solar-sail.htm

What is a solar sail? How can you use sunlight to move a spacecraft in outer space? In this article, HowStuffWorks will show you how solar sail technology works, take an in-depth look at the Cosmos-1 mission and find out what solar-sails mean for future space travel.

How Liquid Motion Lamps Work

home.howstuffworks.com/lava-lamp.htm

The liquid motion lamp has been a pop-culture icon since the 1960s. Learn about the history of liquid motion lamps and see a video explaining their composition.

How Thermoses (Vacuum Flasks) Work

home.howstuffworks.com/thermos.htm

How can the same device keep hot things hot and cold things cold? Find out what goes on inside a Thermos!

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