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Columbus Day activities for kids are designed so you can celebrate the holiday with your kids. Discover great Columbus Day activities for kids.

When you hear the words "Cinco de Mayo," what comes to mind? Margaritas? Mariachi bands? Find out what Cinco de Mayo is all about.

How are men's soaps different from others? Visit Discovery Health to learn how men's soaps are different from others.

Want to know how to prepare underarms for shaving? Visit HowStuffWorks to learn how to prepare underarms for shaving.

Rebus puzzles are pictograms with hidden meanings to solve. Learn how Rebus puzzles work at HowStuffWorks.

Evaluating a dog's health doesn't always require a veterinarian. Learn alternative ways to give your dog a checkup.

A dimension is how we explain the ability to move through space. Are there more to dimensions than just spatial movement? Learn about dimensions.

Einstein's formula for relativity is one of the most famous formulas in the world. Learn about Einstein's formula in this article.

The Malthusian premise centers on the issue of whether or not there will be enough food to sustain human life. Learn about the Malthusian premise.

What is an oil life indicator? Visit HowStuffWorks to learn what an oil life indicator is.

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