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How Do Mountains Form?
science.howstuffworks.com/environmental/earth/geology/earth-s-mountains-are-always-on-move.htm
If geology has taught us anything about Earth's history, it's that nothing is permanent. And that goes for mountain ranges, all of which are constantly rising and falling.
Hematite, a Shape-shifting Mineral From the Stone Age
science.howstuffworks.com/environmental/earth/geology/hematite.htm
You can find hematite found all over Earth, as well as Mars. The bloodstone the main source of iron and is also used in jewelry and painting.
After the Sun Dies, It'll Become a Stellar Crystal
science.howstuffworks.com/after-sun-dies-itll-become-stellar-crystal.htm
The sun is going to eventually leave behind a shimmering legacy and turn into a massive crystal. Learn why at HowStuffWorks.
What If Cows Didn't Exist?
science.howstuffworks.com/science-vs-myth/what-if/what-if-cows-didnt-exist.htm
A world without cows would be a world without burgers, right? Yes, and to beef eaters that's bad news, but it would also be a world with less methane. So would losing all cows be worth it?
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.
That Faint Light in the Night Sky Could Be the Gegenschein
science.howstuffworks.com/gegenschein.htm
The gegenschein, "faint light" in German, occurs under very specific astronomical conditions when the sun reaches the exact opposite of Earth from wherever you're stargazing.
The World Hits 8 Billion People; Is That Good or Bad?
science.howstuffworks.com/environmental/green-science/world-8-billion-people.htm
The world's population is expected to hit 8 billion Nov. 15 2022. Is that too many people or just right?
How Chaos Theory Works
science.howstuffworks.com/math-concepts/chaos-theory.htm
Has this ever happened to you? The meteorologist calls for a massive snowstorm, but the flakes fail to arrive. Chaos theory can shed light on why forecasts fail (and why our orderly world may not be so orderly after all).
Which Major European City Should You Live In?
play.howstuffworks.com/quiz/which-major-european-city-should-you-live
Europe is one of the most diverse and beautiful continents on the planet. It has so many different cultures that it's impossible to decide where to visit or where to live. So if you're especially curious about which city you should make your new home, take this quiz!
Smarter Than the Average American? Take This USA Quiz!
play.howstuffworks.com/quiz/smarter-than-the-average-american-take-this-usa-quiz
Hundreds of millions of people live in the USA, but very few of them know all that much about the country they live in. Do you fit in that category, or do you think you're smarter than the average American? Take our quiz on all things America to find out.