The weight of a Carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed, which was once used as a weighing standard by jewelers in Africa and the Middle East. The word "Carat" itself is believed to be derived from an Arabic word meaning "bean" or "seed."

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A Mile on the ocean and a mile on land are not the same distance. On the ocean, a Mile is known as a nautical Mile and measures 6,080 feet. A land or statute Mile is 5,280 feet.

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