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Bad teeth can be painful -- and worse. They can even be deadly. Infections of the gums and teeth can release bacteria into the blood system.

손가락 길이
Is there meaning in the length of a finger? An eighteen ninety-three guidebook called "Modern Etiquette in Public and Private" had this to say: "Long fingers are a sign of refinement. A short stubby hand argues a lack of sensibility."

귀 청소
Some people's ears produce wax like busy little bees. This can be a problem even though earwax appears to serve an important purpose.

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More Americans than ever are riding their bicycles to work instead of driving. They are doing this because of gas prices, a slowing economy and concerns about the environment.

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Guided tours of the Bureau of Engraving and Printing in Washington D.C. are a popular activity for visitors. These tours are a good way to learn new and interesting facts about the history of money and its complex production methods.

서커스
During the civilization of ancient Rome, the circus was a building for large events. These included horse racing, athletic competitions and wild animal hunts.

스쿠버 다이빙
The word "scuba" stands for self-contained underwater breathing apparatus. Knowing how to dive opens up an entire underwater world of coral, fish, and other creatures.

스테이케이션
One smart way Americans are avoiding such high costs is by taking vacations at home instead of driving or flying to faraway places. Staycations make hotels, long drives and airline flights unnecessary.

모유 은행
Money, jewels and important documents may not be the only valuables placed in banks these days. Some mothers are making deposits, or really, donations, to breast milk banks.

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Alcatraz Island is in the harbor of San Francisco, California. It is best known for being a federal prison, which was also called “The Rock.” It was once the most famous prison in America.