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Why Is Yawning Contagious?

science.howstuffworks.com/life/inside-the-mind/human-brain/contagious-yawn.htm

Contagious yawning is associated with the same parts of the brain that deal with empathy, according to a recent study. Learn about contagious yawning.

How LCD Projectors Work

electronics.howstuffworks.com/lcd-projectors.htm

LCD projectors are great for playing movies on large screens. Find out what you need to know about LCD projectors and how they work.

River-bottom Bones: The Strange World of Underwater Fossil Hunting

science.howstuffworks.com/environmental/earth/geology/underwater-fossils.htm

Winding through the South Carolina low country, the Cooper River is a reed-lined haven for sportfish and shorebirds. The waterway originates in Berkeley County's Lake Moultrie. From there, it proceeds all the way down to Charleston, where it merges with the Ashley and the Wando to form that city's world-famous harbor. (Ever hear of Fort Sumter?)

Why is water vital to life?

science.howstuffworks.com/environmental/earth/geophysics/water-vital-to-life.htm

We know water is vital to life on Earth, but have you ever wondered why? Find out why water is vital to life on Earth in this article.

What Is CrossFit?

health.howstuffworks.com/wellness/diet-fitness/exercise/what-is-crossfit.htm

Have you ever wondered what CrossFit is exactly and what this workout entails? Read on to learn and the pros and cons of the CrossFit workout.

Alien Sightings: Probing the Influx of UFO Reports

science.howstuffworks.com/space/aliens-ufos/where-most-ufos-are.htm

For centuries, people have been reporting sightings of strange objects in the sky - unidentified flying objects (though UAP is the term du jour). These events continue to captivate the world.

Towering Obelisks Are Everywhere. Here's Why They're So Awe-inspiring

science.howstuffworks.com/engineering/architecture/obelisk.htm

Obelisks can be found in cities throughout the world, from Washington, D.C., to Paris, France. But what is the origin of these massive structures?

Why Do We Find Waiting on Hold So Irritating?

money.howstuffworks.com/why-waiting-on-hold-so-irritating.htm

'Your call is very important to us...' Uh, really? Then why are you still on hold? HowStuffWorks looks at the art and science of being put on hold.

How Did Weasels Get Such a Bad Rap?

animals.howstuffworks.com/mammals/weasels.htm

Weasels are cute little rodents, but they have a reputation for being one of the worst of the mammals. HowStuffWorks explains how they got a bad rap.

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