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How Traffic Works

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Traffic can cause us to spend up to two weeks in our car each year. Learn about traffic and find out which cities have the worst traffic in the world.

How Ticks Work

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Ticks are parasites that feed on the blood of their hosts, and are known for carrying diseases. Learn about ticks and find out how to remove ticks.

How Homelessness Works

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Homelessness is an unfortunate situation that affects people who cannot afford a home. Learn about homelessness and how you can help the homeless.

How Population Works

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Population is one of the most important aspects of human civilization. Learn about population and find out how a population is counted.

How Avalanches Work

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Learn how avalanches form, how long you can stay alive while buried under an avalanche and what steps you can take to survive.

How Amazon Works

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Amazon.com's story is an e-commerce dream. Find out what makes Amazon different and how its technology infrastructure supports its sales approach.

10 Cancer Myths

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10 cancer myths will expose the truth about cancer. Learn more about 10 cancer myths at Discovery Health.

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?