The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
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The average temperature at 40,000 feet above sea level is -60 F.
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In zero gravity, a candle's flame is round and blue.
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Research indicates that plants grow healthier when they are stroked.
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Your brain is 80% water.
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Iron weighs more after it rusts.
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Aluminum used to be more valuable than gold!
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