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How Gene Doping Works

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In gene doping, athletes would modify their genes to perform better in sports. Learn why gene doping isn't acceptable but gene therapy is.

How Gene Patents Work

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Gene patents allow companies and researchers to lay claim to sequences of genetic code. Learn more in How Gene Patents Work.

How Gene Pools Work

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The physical you is a result of your DNA, and your DNA is part of the human gene pool. Find out what the "gene pool" really is and what happens when it shrinks.

How Geodesic Domes Work

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If you think regular old domes took the world of structural engineering by storm, you should meet their geodesic cousins. What is a geodesic dome, and who first came up with the idea of building triangle-covered spheres as practical structures?

How Geothermal Energy Works

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Geothermal energy is clean, abundant and renewable. Learn about geothermal energy, geothermal heat pumps and geothermal power plants.

How Geysers Work

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Geysers are explained in this article. Learn about geysers.

How Ghost Busters Work

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'Ghostbusters,' the movie, was fiction, but paranormal investigators really do exist. Learn how real-life ghost busters differ from Hollywood's version.

How Ghosts Work

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Ghosts are the spirits of dead people that have either returned from the afterlife, or not moved on to it. Learn about ghosts and explanations for ghosts.

How Ghouls Work

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Blood-sucking vampires and brain-munching zombies tend to hog all the undead credit, but we think ghouls deserve a macabre article all their own. Read it -- if you dare.

How Gliders Work

science.howstuffworks.com/transport/flight/modern/glider.htm

Flying in a glider is about as close as you can get to soaring like a bird. Amazingly, these graceful machines manage their maneuvers without an engine. Learn how gliders fly without power.