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Can You Pass a Scuba Diving Certification Quiz?

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Scuba diving: It's the passport to a gorgeous underwater world ... but it's not very forgiving of the careless or the reckless! Think you could pass a diver certification quiz? Find out now with our quiz!

How Lasers Work

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Lasers are used in dental drills, eye surgery, tattoo removal, and (of course) laser pointers. Learn how different lasers generate such concentrated light.

Can You Answer All of These Texas Trivia Questions Without Any Hints?

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There's a lot more to Texas than BBQ, cowboys, live music and the Alamo. From crazy hot summers to bluebonnet flowers and the best rodeos in the world, Texas has lots to be proud of. But how much do you know about it? Take the quiz and see!

How the Periodic Table Works

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The periodic table currently organizes more than 100 named elements and several unnamed ones. Learn about the periodic table.

How Do Boats Float? A Look at How Boats Made of Steel Float

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Displacement of water is what allows a boat to float on the water, but how does it work? Find out how displacement allows a steel boat to float in water.

5 Ways to Remove Stains From Formica

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Everyone's looking for a deal these days, and it's no different in materials for your home. Enter Formica: a countertop making a comeback thanks to its lower price tag.

How do you write the chemical reaction that takes place in a smoke detector?

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Chemical formulas provide a concise explanation for reactions. In this article, we explain the formula for the reaction in a smoke detector.

Thrift Store Fun: 5 Reasons to Shop at a Thrift Store

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Here are 5 reasons to shop at a thrift store by HowStuffWorks. Learn more in this article about 5 reasons to shop at a thrift store.

ITER Nuclear Fusion Plant Is Halfway Finished

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The International Thermonuclear Experimental Reactor plant aims to demonstrate that nuclear fusion could be a viable source of power in the future.

Test Your Firefighting Knowledge With This Quiz

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It's not everyone who can put their own life on the line and run into a fire to save a stranger, but that's what firefighters sign up to do. How much do you really know about firefighting? Take the quiz and see!

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