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The horizontal fraction bar was introduced by the Arabs.
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The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.
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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.
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No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.