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Should the U.S. Let People Younger Than 35 Run for President?

people.howstuffworks.com/us-millennials-under-35-age-limit-president.htm

Why is there a minimum age limit for the U.S. presidency? Learn more about the age limit in this HowStuffWorks article.

5 Things You Didn't Know About Alan Shepard

entertainment.howstuffworks.com/5-things-you-didnt-know-alan-shepard.htm

Nov. 18 is Alan Shepard's birthday. HowStuffWorks Now shares some little-known facts about the first American in space.

Why Do Bruises Change Colors as They Heal?

health.howstuffworks.com/skin-care/information/health-factors/why-do-bruises-change-colors-as-heal.htm

It's super weird that a bruise changes from deep purple to green to yellow during the healing process. HowStuffWorks looks into this strange process.

What Did Your Address Look Like 250 Million Years Ago?

science.howstuffworks.com/environmental/earth/geophysics/what-did-your-address-look-like-250-million-years-ago.htm

The Ancient Earth visualization map shows the movement of the planet's tectonic plates in a really cool way.

Why Do People Knock on Wood for Luck?

people.howstuffworks.com/why-do-people-knock-on-wood-for-luck.htm

Have you ever wondered why people knock on wood for luck? Like many superstitions, the answer goes back as far as pagan rituals.

What If You Ate Uranium?

science.howstuffworks.com/science-vs-myth/what-if/what-if-ate-uranium.htm

You would probably be pretty freaked out if you ate uranium, right? Well, if you've ever eaten a potato or turnip, you may already have done so. How does your body deal with this radioactive substance?

Dog Chastity Belts: The Unusual Alternative to Spaying and Neutering

animals.howstuffworks.com/pets/dog-chastity-belt.htm

If you want to prevent a "whoopsie" litter of puppies but you're not quite ready to spay or neuter your dog, try a dog chastity belt. A no, we're not kidding.

The Ultimate Fighting Championship Quiz

play.howstuffworks.com/quiz/ultimate-fighting-championship-quiz

These mixed martial arts fighters pummel each other into submission for fans worldwide. How much do you know about the UFC? Fight through this quiz to find out.

The Cotton Gin: Eli Whitney and the Impact on the U.S. Economy

science.howstuffworks.com/innovation/inventions/cotton-gin.htm

Explore the ingenuity of Eli Whitney's cotton gin, a machine that transformed cotton processing, reshaped industries and influenced economies.

Why Don't All Food Cans Have Pull Tabs?

money.howstuffworks.com/food-cans-pull-tabs.htm

You can open a can with a can opener, but a can with a pull tab is even easier to open. So, why don't more cans come with pull tabs?

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