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The SteriPEN is a very popular travel gadget. Learn more about the SteriPEN at HowStuffWorks.

Hand, foot and mouth disease can be a little misleading. Learn what hand, food and mouth disease really is and how it can be treated.

What are flat warts? Learn five easy ways to treat these harmless spots and rid yourself of flat warts for good.

Ink and toner both go into and out of printers, but they have different functions. Learn about the differences between ink and toner.

What's the difference between summer-grade fuel and winter-grade fuel? If summer-grade fuel is so great, why don't we use it year-round?

Are you wondering how rabies works? Learn how rabies works and how it can be prevented.

Some people wonder if radiant floor heating systems could be related to some cancers. Find out if radiant floor heating is related to some cancers.

Ingrown hairs are unsightly and sometimes painful. Learn more about how ingrown hairs work at HowStuffWorks.

Did you know that there are some great hidden health benefits of tomatoes? Check out our top 5 hidden health benefits of tomatoes.

What is an emollient? Read what makes an emollient different from a humectant and how emollient creams can help fight dry skin.

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