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Did you know?
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.
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Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.
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The average adult has about 21 square feet of skin.
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If you could remove all of your skin, it would weigh up to 5 pounds.
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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.