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Audience testing can radically change the course of a movie. See how audience testing works and view famous movies that were changed after feedback.

Have you been called for jury duty four times while your friend never has? Find out if some people get summoned for jury duty more than others.

The Campagna Motors T-Rex is a three-wheeled speedster combining car and motorcycle features. Read about the Campagna Motors T-Rex at HowStuffWorks.

There are some anti-aging vitamins that can help you fight aging. See our list of the top five anti-aging vitamins.

This fashion guide for women in their 30s helps you be fun and flirty. Find your personal style with the fashion guide for women in their 30s.

Why would I upgrade to a synthetic motor oil? Learn about the pros and cons of synthetic motor oil.

Skin problems you can get from your pets include bacteria, fungi and bugs. Learn about skin problems you can get from your pets.

Monkeys are wild animals, not pets. HowStuffWorks looks at the six main reasons that owning a monkey is not a good idea.

John F. Kennedy was the youngest man elected president of the United States and fourth killed in office. HowStuffWorks looks at JFK's life and death.

TED talks spread innovative ideas and exciting discoveries through 18-minute talks. Learn more about the history, production and impact of TED talks.

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