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How Subways Work

science.howstuffworks.com/engineering/civil/subway.htm

London without the Tube? New York without its underground scene? Atlantans gliding straight from their MARTA stops to the airport? What would life be like without our underground transportation system?

How Sugar Works

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Whether it's providing us with a quick dose of energy or satisfying a sweet tooth, we love sugar. But is sugar a good fuel for us and our cars?

How Suicide Bombers Work

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Suicide bombers use a unique form of terrorism in order to advance their message. Learn about suicide bombers.

How Sunglasses Work

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Whether you're hitting the surf or the slopes or just spending a day on the lake, sunglasses are a must-have accessory. Find out if the $10 sunglasses are as good as the high-cost ones.

How Supermoons Work

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It's a bird, it's a plane, it's a supermoon! Aside from being bigger and brighter than a regular moon, does a supermoon affect anything on Earth?.

How Supervolcanoes Work

science.howstuffworks.com/nature/natural-disasters/supervolcanoes.htm

Only a few natural events pack the power to knock global civilization on its heels. One is a planet-killing meteor. Care to guess the other?

How Sustainable Agriculture Works

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How does sustainable agriculture work? Learn about green technologies and innovations in the field of sustainable agriculture.

How Sustainable Communities Work

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Sustainable communities strive to lower their impact on the environment without lowering the quality of life. Learn how sustainable communities work.

How Sustainable Forestry Works

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How does sustainable forestry work? Learn about green technologies and innovations in the field of sustainable forestry.

How Swine Flu Works

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Swine flu has been a growing concern. Take a look at the history of swine flu and swine flu symptoms, treatment and swine flu prevention.