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If you could remove all of your skin, it would weigh up to 5 pounds.

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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

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About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

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The horizontal fraction bar was introduced by the Arabs.

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The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

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