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The Geology Behind 5 American Landmarks
science.howstuffworks.com/environmental/earth/geology/geology-american-landmarks.htm
The U.S. is full of exceptional geological formations. HowStuffWorks looks at at five that set the bar high as far as landmarks go.
Tsar Bomba: The Most Powerful Nuclear Weapon Ever Built
science.howstuffworks.com/tsar-bomba.htm
In 1961, the Soviet Union detonated the Tsar Bomba, still the biggest, most powerful nuclear bomb ever built. One of the cameramen who recorded the event said it sounded "as if the Earth has been killed."
Railroad Expansion
history.howstuffworks.com/american-history/railroad-expansion.htm
The railroad expansion of the middle and late 1800s changed America forever. Read more about the westward expansion of railroads.
Charles Lindbergh's Transatlantic Flight
history.howstuffworks.com/historical-figures/charles-lindbergh.htm
Charles Lindbergh made the first transatlantic flight, from New York to Paris. Learn more about Charles Lindbergh's flight and his plane, the Spirit of St. Louis.
Could Earth Ever Get a New Ocean?
science.howstuffworks.com/environmental/earth/oceanography/earth-get-new-ocean.htm
To say geologic time moves at a snail's pace is an insult to snails. Our planet's continents are always in flux: Could a new ocean grow amid those incredibly slow changes?
The Ultimate Washington, DC Quiz
play.howstuffworks.com/quiz/washington-dc-quiz
New York and Chicago might have skyscrapers, but those buildings cower in importance before the magnificent Washington Monument and the Capitol Building. The memorials to Abraham Lincoln, WWII, Vietnam, and Korea remind us of the great sacrifices America has made in the name of freedom and democracy. And let's not forget the great restaurants, museums and exciting nightlife! Take our quiz and discover just how much a fun a trip to Washington D.C. can be.
Hummingbird Migration Can Mean Flying 2,000 Miles Without a Break
animals.howstuffworks.com/birds/guess-how-far-a-hummingbird-can-fly-stopping-nope-its-farther.htm
Ruby-throated hummingbirds migrate annually from the U.S. all the way to Central America. How often would one need to stop? A new study reveals amazing abilities.
The Ultimate Harley-Davidson Quiz
play.howstuffworks.com/quiz/harley-davidson-motorcyles-quiz
Harley-Davidson is synonymous with deafening roars on the open road. How much do you know about these world-famous motorcycles? Take this quiz to find out.
What Is a Van Allen Radiation Belt?
science.howstuffworks.com/dictionary/astronomy-terms/van-allen-radiation-belts-info.htm
Van Allen Radiation Belts, two zones encircling the earth in which there are relatively large numbers of high-energy (fast-moving) charged particles.
How many calories does running burn?
Scientists once assumed that running and walking used the same amount of energy -- that is, they burned the same number of calories. However, a group of Syracuse University researchers found that running actually burns more calories than walking. What factor had scientists overlooked in the past?