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How Igloos Work

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Igloos may be made by the Inuit as temporary houses to use on fishing and hunting expeditions. Read about igloos and find out how to build an igloo.

How Autopilot Works

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Autopilot is a sophisticated system that can perform the same duties that a pilot can. Learn about autopilot and find out how autopilot controls a plane.

How CVTs Work

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CVTs were first conceived more than 500 years ago and are now found in some cars. Learn about CVTs, continuously variable transmissions, and types of CVTs.

How Kelley Blue Book Works

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Kelley Blue Book is the standard automotive price guide for dealers and consumers. Learn how Les Kelley started Kelley Blue Book in 1926.

Digital subscriber line (DSL) technology transmits data over phone lines without interfering with voice service. Find out how DSL uses extra bandwidth to provide a fast Internet connection without taking over your phone.

How Ninja Work

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Get a load of this: ninja fact, ninja fiction, and some of the most clever, terrifying weapons used by the shadowy mercenaries of ancient Japan. Find out the true story of the ninja.

How Endurance Racing Works

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Endurance racing features the passing and maneuvering of shorter races, but its also demanding on the cars. Read more about endurance racing.

How Tuning Forks Work

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Pianos lose their tuning, guitars fall out of key -- even church organs need to be tuned every now and then. For centuries, the only sure-fire way to tell if an instrument was in tune was to use a tuning fork.