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We hear about the ozone layer all the time. But, what is the ozone layer and what are the ozone layer's components?

Ever hear that saying that a cow lies down when rain is coming? This superstition may not be as udderly ridiculous as you think.

I keep hearing about some drug called "OxyContin" in the news. What is it? Why all the fuss?

You hear this vague directive in all different circumstances. Here's how to nail it every time you're asked.

The importance of sleep is something you hear about often in health news, but is lots of sleep really necessary? Investigate the importance of sleep.

At many sports games, you'll hear the cry 'DEE-FENSE.' HowStuffWorks finds out who started it and why.

Tyrannosaurus rex, one of the fiercest meat-eaters ever, is the animal that probably springs to mind when most of us hear the word "dinosaur."

I hear people saying that vinyl records have a better sound quality than CDs or even DVDs. How can this be?

It is pretty common to hear someone on the news say, "The crowd was dispersed with tear gas." What is tear gas? What does it do?

Ghost tours give tourists the opportunity to brush shoulders with spirits, or at the least, hear a few good ghost stories. Learn about ghost tours.

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