HowStuffWorks Newsletter
The eyes, ears, nose and throat are interconnected organs that are vital parts of several body systems. Discover how these organs work as well as conditions that can affect them.
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At night, your eyes adjust to darkness after several minutes. Do you know why it takes that long? Take a look at how your eyes adjust to darkness.
"Don't cross your eyes -- they'll stick that way!" That's something most of us have heard from our mothers at one time or another. Can your eyes really get stuck?
Back away from that speaker, turn down your music, and put down that power tool unless you want the ringing in your ears to be permanent. Sound can hurt you, and that ringing may be the first sign.
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Eyebrows add expression to your face, and are often waxed and plucked in the name of beauty. But why do we have them in the first place, and what would happen if they went away?
Roses are red, violets are blue -- well, bluish. The sky is blue, too. Grass is green. These are things that most of us know for a fact and don't question. But what if you were colorblind? What would you see? Is life one long black-and-white movie?
Millions of people have refractive vision problems -- when the eyes get blurry or can't focus on an object. Learn about four major types of refractive vision problems.
We all know 20/20 vision is a good thing, but just what do those numbers mean?
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Your ears are very sensitive to the air or water pressure around them. But just what happens when you dive into that pool?
You may never have thought about it (unless your child asks), but boogers are sticky for a perfectly logical scientific reason.