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The Perfect Length for a Pop Song

entertainment.howstuffworks.com/the-perfect-length-a-pop-song.htm

Why are most radio songs between three and four minutes? Learn the science and psychology behind pop song length at HowStuffWorks Now.

All Mouth, No Anus: Microscopic Organism Could Be Oldest Human Ancestor

animals.howstuffworks.com/marine-life/saccorhytus-coronarius-deuterostome-ancestor.htm

Primitive deuterostome fossils show a precursor to all vertebrates, including humans. Learn about deuterostomes in this HowStuffWorks Now article.

Why Your Hair Is Tougher Than Razor Blades

science.howstuffworks.com/hair-dulls-razor-blades.htm

You think stainless steel is a strong metal. So would it surprise you to learn it can't hold an edge when it comes to your hair?

Time to Vent: Why You Need to Turn on the Kitchen Exhaust Fan

home.howstuffworks.com/kitchen-exhaust-fan.htm

One study showed gas stoves had pollutant levels exceeding limits for outdoor pollution, so don't save the kitchen fan only for when you've let the bacon burn.

Scientists Say: Hey, Hikers, Stop Stacking Rocks!

science.howstuffworks.com/environmental/conservation/issues/rock-cairns.htm

It may seem cool to stack rocks for fun or artistic purposes but moving rocks may inadvertently threaten small mammals and insects and contribute to soil erosion.

Velociraptor Alert: The Feathered Dinosaur Quiz

science.howstuffworks.com/environmental/earth/geology/feathered-dinosaur-quiz.htm

Test your knowledge of the fluffy, winged dinos of the bygone Mesozoic era, from little Microraptor to the enormous Yutyrannus with this quiz.

Can We Guess Your Age in Just 30 Questions?

play.howstuffworks.com/quiz/can-we-guess-your-age-just-30-questions

Through historical, pop culture, and musical references, we think that we can guess your age by simply asking you these 30 questions. Find out how accurate we are.

Can We Guess Your Age Based on Your Taste in Music?

play.howstuffworks.com/quiz/can-we-guess-your-age-based-your-taste-music

While many people develop new musical tastes as they age, or fall in love with the songs of another era, most of us retain an affinity for the sounds of our youth. Let us guess what those sounds were for you!

Moon-eyed People: Mysterious Beings or Welsh Settlers?

science.howstuffworks.com/science-vs-myth/strange-creatures/moon-eyed-people.htm

The moon-eyed people legend describes a mysterious race of pale-skinned, blue-eyed people who supposedly lived in the Appalachian region before the Cherokee arrived. According to Cherokee legend, these people could not see well in daylight, forcing them to live in caves and only come out at night.

What Do Groundhogs Eat?

animals.howstuffworks.com/mammals/what-do-groundhogs-eat.htm

You’ve seen them pop up on Groundhog Day, predicting six more weeks of winter or the coming of spring. But what do groundhogs eat?

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