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How Volcanoes Work
science.howstuffworks.com/nature/natural-disasters/volcano.htm
Volcanoes are some of nature's most awe-inspiring displays, with everything from exploding mountaintops to rivers of lava. Learn how all the different types of volcanoes work.
11 Pretty Awesome Facts About the Pacific Ocean
science.howstuffworks.com/environmental/earth/oceanography/pacific-ocean.htm
It covers more than 30 percent of the planet, and is home to all kinds of sea creatures. What other facts make the Pacific Ocean so amazing?
UFOs and the Government
science.howstuffworks.com/space/aliens-ufos/ufo-government.htm
Project Sign was the first major government UFO investigation project. Read how Project Sign began and the history of UFOs and the U.S. government.
Terrestrial Planets Are the Rocky Planets of the Solar System
science.howstuffworks.com/terrestrial-planets.htm
Terrestrial planets include the four closest to our sun, including Mercury, Venus, Earth and Mars. What else makes these celestial bodies terrestrial planets?
Where does your unclaimed luggage end up?
science.howstuffworks.com/transport/flight/modern/lost-luggage.htm
Unclaimed luggage usually ends up at the Unclaimed Baggage Center in Scottsboro, Alabama, where it is then sold. Learn more about unclaimed luggage.
Will orbital chaos cause Earth, Venus and Mars to collide?
science.howstuffworks.com/earth-venus-mars-collide.htm
Will orbital chaos collide Earth, Venus and Mars? Read about the possibility of Earth, Venus and Mars colliding if their orbits go awry.
What If Earth's Magnetic Field Flipped?
science.howstuffworks.com/science-vs-myth/what-if/what-if-earths-magnetic-field-flipped.htm
Earth's magnetic field has flipped many times before, and scientists say it will flip again (though probably not in our lifetime). While it might not be catastrophic, a major change in the magnetic field would present a special set of problems.
How to Use the Unit Circle in Trigonometry
science.howstuffworks.com/math-concepts/unit-circle.htm
A unit circle is an important part of trigonometry and can define right angle relationships known as sine, cosine and tangent.
Why Did the Russians Seal Up the Deepest Hole in the World?
science.howstuffworks.com/engineering/civil/kola-superdeep-borehole.htm
The Kola Superdeep Borehole in Russia is the deepest hole in the world. It's deeper than the Mariana Trench and deeper than Mt. Everest is tall. Why did the Russians dig this deep, and why did they stop?
Pantheon vs. Parthenon: What's the Difference?
science.howstuffworks.com/engineering/structural/pantheon.htm
It's easy to confuse the Parthenon and the Pantheon. The names are so similar, and they're both ancient ruins. But despite those similarities, the two structures are very different.