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When Were CDs Invented, and How Do They Work?

electronics.howstuffworks.com/cd.htm

The advent of compact discs brought about digital storage and made pinpointing data a split-second task. But when were CDs invented, and how exactly do they work? Read on to get some answers!

How do plants compare to solar cells when it comes to collecting solar energy?

science.howstuffworks.com/environmental/green-science/question638.htm

How do plants compare to solar cells when it comes to collecting solar energy? Would you get more power from an acre of ground by putting solar cells on it or by raising plants?

What Is Leap Year? And Why Was 1900 a Non-leap Year?

science.howstuffworks.com/science-vs-myth/everyday-myths/question50.htm

February is an unusual month, especially when it comes to leap years. In this article, you can read about why we use leap years and how the year 2000 was a leap year and 1900 was not.

Why does my PC try to access my floppy disk drive when there is no diskette in it?

computer.howstuffworks.com/question560.htm

When your PC tries to access your floppy disk drive, there could be a number of reasons. Luckily, they're pretty simple to solve -- we'll show you how to troubleshoot and fix this problem.

Why doesn't paper money disintegrate when it gets washed in the washing machine?

money.howstuffworks.com/question108.htm

When I leave a normal piece of paper in my pocket and it gets washed in the washing machine, it totally disintegrates. But if I leave a dollar bill in my pocket and wash it, it comes out intact. What is the difference?

When You Have to Go But Don't Want People to Know

health.howstuffworks.com/human-body/systems/digestive/faux-fan-masks-sound.htm

Does using a bathroom other than your own freak you out? The Faux Fan drowns out the sounds your body makes when you have to, well, go, so you can poop without worrying people will hear.

When will life on Earth end?

science.howstuffworks.com/life/evolution/life-on-earth-end.htm

Imagine a time in Earth's far-flung past when organisms didn't swim through the oceans or populate the lands. Even the mighty dinosaurs hadn't arisen. Will the planet ever return to that lifeless state?

Why Doesn't My Cat Purr, Even When It's Happy?

animals.howstuffworks.com/pets/why-doesnt-my-cat-purr.htm

You might be relaxing with your pet, gently stroking their fur, and suddenly wonder, "Why doesn't my cat purr?" For many cat owners, the absence of that familiar vibration is surprising, especially when everything else about their kitty seems perfectly normal.

What does it mean when a hard disk has a head crash?

computer.howstuffworks.com/question60.htm

I was using my computer the other day and it suddenly started to make a high-pitched squealing sound and then stopped working. When I took it in for repair, the service guy said that my hard disk had had a "head crash" and died, taking all of my data with it. What happened?

Should You Turn Your Heat Down When You're Not Home?

home.howstuffworks.com/home-improvement/heating-and-cooling/turn-heat-down-not-home.htm

As you leave home on a winter morning, you may wonder whether to turn off your heat, turn it down or let it maintain a cozy temperature. Which will save the most energy and money? The answer might surprise you.

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