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What if there were no sharks?
animals.howstuffworks.com/fish/sharks/what-if-there-were-no-sharks.htm
We may be fascinated by sharks, but they can cause trouble for other species. Learn what Earth would be like if there were no sharks at HowStuffWorks.
How Much Do You Know about United States Currency?
play.howstuffworks.com/quiz/how-much-do-you-know-united-states-currency
United States currency is the most powerful on Earth, mostly thanks to the strength of the country's economy. How much do you know about American currency?
How Much Spanish do you really know?
play.howstuffworks.com/quiz/how-much-spanish-do-you-really-know
Spanish is a diverse and beautiful language and also one of the most commonly spoken ones on earth. Test your Spanish knowledge with this HowStuffWorks quiz!
What Is the Greenhouse Effect? Is It Inherently Bad?
science.howstuffworks.com/environmental/green-science/question746.htm
We'd be up a creek without Earth's atmosphere and the greenhouse effect it provides, but it turns out that an overactive greenhouse effect can result in a similarly devastating outcome.
How Aliens Work
science.howstuffworks.com/space/aliens-ufos/alien-physiology.htm
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.
Is Virgo a Water Sign? Everything You Need to Know About Its Element
entertainment.howstuffworks.com/horoscopes-astrology/is-virgo-a-water-sign.htm
Is Virgo a water sign? Learn the truth about Virgo's elemental identity, its earth sign characteristics, and why it’s often confused with water signs.
How Space Junk Works
science.howstuffworks.com/space-junk.htm
Space junk is the debris orbiting Earth, left behind by satellites and space shuttles. Find out how much space junk is up there and space junk dangers.
Scientists Detected a Space Hurricane for the First Time. What's That?
science.howstuffworks.com/nature/climate-weather/atmospheric/space-hurricane.htm
In 2014, scientists observed a space hurricane for the first time; they reported their findings this year. But what's a space hurricane - and do we on Earth have to worry about with them?
How big does a meteor have to be to make it to the ground?
science.howstuffworks.com/question486.htm
How big is a shooting star? Do they land on earth or do they burn up? Learn how what tiny particles of space dust have to do with meteors.
10 Ways to Stop a Killer Asteroid
science.howstuffworks.com/10-ways-to-stop-asteroid.htm
Killer asteroids are all fun and games -- until they're headed for earth. Luckily, scientists have come up with 10 ways to stop a killer asteroid.