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For Teen Twins, Bad Behavior Can Be Contagious

health.howstuffworks.com/mental-health/human-nature/behavior/teen-twins-bad-behavior-can-be-contagious.htm

Siblings can have a major influence on each other when it comes to bad behavior. Learn how delinquency spreads among twins at HowStuffWorks Now.

What Is a Bear Market?

money.howstuffworks.com/bear-market-news.htm

An economist explains the difference between a true bear market and a correction, and whether a bear market always signals a recession is on the way.

How do boogers form in your nose?

health.howstuffworks.com/human-body/systems/nose-throat/boogers-form-in-nose.htm

Boogers form in your nose for a very specific purpose - and it's not to gross out other people. Find out how boogers form at HowStuffWorks.

Do Dogs Really Cry 'Happy Tears'?

animals.howstuffworks.com/pets/dogs-cry-happy-tears-news.htm

A first-of-its-kind study out of Japan set to find out, and the results were surprising to everybody.

How would time travel affect life as we know it?

science.howstuffworks.com/science-vs-myth/time-travel-affect-life.htm

Would time travel affect life in any significant way if it was at all possible? Find out if time travel would affect life in this article.

Half the World Will Be Nearsighted by 2050

health.howstuffworks.com/human-body/systems/eye/half-the-world-will-be-nearsighted-2050.htm

It's estimated that a shocking 5 billion people will be nearsighted by 2050. HowStuffWorks Now examines the reasons why.

Do fish ever really rain from the sky?

science.howstuffworks.com/science-vs-myth/unexplained-phenomena/fish-rain-from-sky.htm

Could fish rain from the sky? Things like this don't really happen, right? Find out.

Mudskipper Robot Helps Show How Vertebrates Evolved to Walk on Land

science.howstuffworks.com/mudskipper-robot-vertebrate-locomotion.htm

A robot to simulate mudskipper locomotion gives scientists a look into the success of the first land vertebrate ancestors, and points to our future on other planets.

What are the Nazca lines?

science.howstuffworks.com/science-vs-myth/unexplained-phenomena/nazca-lines.htm

Long before crop circles captured the world's imagination, a Peruvian culture called the Nazca went about creating a series of intricate lines -- sometimes in the shapes of animals -- on the desert floor. But how'd they do it -- and why?

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