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There are approximately 3 million unintended pregnancies in the United States each year.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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The average office desk has 400 times more bacteria on it than a toilet.
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Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.