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How Astrobiologists Work
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Astrobiologists apply the scientific method to questions once considered the purview of sci-fi fans. Learn about astrobiologists at HowStuffWorks.
Why is water vital to life?
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We know water is vital to life on Earth, but have you ever wondered why? Find out why water is vital to life on Earth in this article.
Is It Time to Redefine the Four Seasons of the Year?
The four seasons experienced by Earth's midlatitude regions are being gradually altered by global warming - but a climate expert says they won't completely go away.
Top 10 Space Conspiracy Theories
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Space conspiracy theories feature hoaxes, government cover-ups and intelligent aliens. Check out our list of the top 10 space conspiracy theories.
How Aliens Work
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Alien life forms would probably differ from those on Earth but still adhere to certain principles. Learn about astrobiology and the search for alien life forms.
What Borderlands Character Are You?
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Vault Hunters! Are you just a forgettable nobody wandering Pandora waiting to be Skrag food? Heck no! You are here to make an impression. You are somebody! But who? Grenade jump your way into this quiz and find out!
Lunar Cycles Quiz
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William Shakespeare warned us "Do not swear by the moon, for she changes constantly." Sound advice, right? Well, maybe. Sure, she changes, but her phases remain quite reliable. Take the following quiz to see what I mean!
Which Major European City Should You Live In?
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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!
Cancer Compatibility in Love, Work and Friendship
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If you're a Cancer, which signs will you connect with best in love, friendship and work? We talk with two astrologers to learn about Cancer compatibility.
The Hardest True or False General Knowledge Quiz You'll Take This Year
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Think you are a genius when it comes to general knowledge? See if you can take on 50/50 odds with this HowStuffWorks quiz!