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How Elevators Work

science.howstuffworks.com/transport/engines-equipment/elevator.htm

In action movies, elevators regularly plummet to the basement, landing in a spectacular ball of fire. Is this possible? There are some sophisticated engineering techniques at work behind every elevator ride you take.

How Metal Detectors Work

electronics.howstuffworks.com/gadgets/other-gadgets/metal-detector.htm

Metal detectors can help you find metal buried deep in the ground. Find out how metal detectors work and learn about the different types of metal detectors.

How the Air Car Works

auto.howstuffworks.com/fuel-efficiency/vehicles/air-car.htm

The air car has finally moved from dream to reality. Learn how the air car uses compressed air for low-to-zero emissisons power.

How Eco-terrorism Works

science.howstuffworks.com/environmental/green-science/eco-terror.htm

Eco-terrorism attacks people or things that threaten the environment or the wildlife it supports. Learn how eco-terrorism works and who's behind it.

How Tankless Water Heaters Work

home.howstuffworks.com/tankless-water-heater.htm

The green movement is bringing tankless water heaters to the forefront of the appliance market. They last longer, don't take up much space and give you as much hot water as you want. Is there a catch?

How to Choose a New Water Heater

home.howstuffworks.com/how-to-choose-a-water-heater.htm

How to choose a water heater covers everything you should look for when purchasing a water heater for your home. Learn about choosing a water heater.

How Spy Gadgets Work

entertainment.howstuffworks.com/spy-gadget.htm

Spy films, like those starring James Bond, are full of special gadgets like lipstick guns, hubcap lasers, turbo hovercraft and rocket-launching radios. But which of these amazing tools actually have real-life counterparts, and which ones only exist in the realm of fictional spies like 007? Find out.

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