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How Much Do You Know About the American Frontier?
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You'll grow ever so curious with each amazing fact you discover on this American expansion quiz. The sweet land of liberty went through some rough patches during its birth. Learn a few of the more sensational events that made America so splendid!
How Tunnels Work
science.howstuffworks.com/engineering/structural/tunnel.htm
Constructing a tunnel is one of the most complex challenges in the field of civil engineering. Learn about the basics behind tunnels.
Top 10 Structurally Amazing Bridges
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Bridges move cars, trains, bikes and people, among other things. These 10 may even move your soul with their engineering ingenuity and beauty. So which 10 make the cut?
10 Technologies That Help Buildings Resist Earthquakes
Bend but don't break: That's the idea behind many of these temblor-thwarting technologies. They may even allow a building's inhabitants to walk out unharmed and start picking up the pieces after the earthquake subsides.
How Bridges Work
science.howstuffworks.com/engineering/civil/bridge.htm
Bridges support tremendous weight, span huge distances and all the while withstand the greatest forces of nature. Find out about these engineering feats (as well as some of the flaws).
10 Tips for Mapping Your Family History
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You might know where you're going but do you know where you came from? Here are 10 tips for mapping your family history from HowStuffWorks.
UFO History
science.howstuffworks.com/space/aliens-ufos/ufo-history.htm
Modern UFO history began with the 1947 UFO sighting by pilot Kenneth Arnold. Learn the history of UFOs from ancient times to the mid-20th century.
Pearl Harbor Attack: What Led to It and What Was the Aftermath?
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Japan's bombing of Pearl Harbor was the major event that caused the United States to enter World War II. Learn about the attack only at HowStuffWorks.