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How do beermakers know how the alcohol content of a beer? HowStuffWorks gets to the bottom of it.

Test Sir Isaac Newton's laws of gravity and motion with science projects. Learn how to make science projects for kids: laws of gravity and motion.

An underwater explosion or UNDEX won't absorb the destruction like air does. Learn why an underwater explosion could harm you more than one on land.

Population is one of the most important aspects of human civilization. Learn about population and find out how a population is counted.

Does a corked bat really hit a ball farther? Find out whether a corked bat really can hit a ball farther in this article from HowStuffWorks.

When sound waves strike the ear, these waves produce the sensation of sound. Let's take a look at how sound waves work.

Understanding carpet labels can be tricky. Visit HowStuffWorks to learn about 10 tips for understanding carpet labels.

Without question, they save lives - but they aren't 100 percent failsafe.

Easy water activities for kids make a splash, and water is a material that's always on hand. Learn easy water activities for kids at HowStuffWorks.

Selecting to the carpet pad can be tricky, especially for first time carpet buyer. Visit HowStuffWorks to learn how to select the right carpet pad.

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