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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Sound travels about 4 times faster in water than in air.
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Most dust particles in your house come from dead skin.
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One cubic foot of gold weighs more than 1,200 pounds!
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The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
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Scientists in Germany have developed a candy that doesn't cause cavities.
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The inventor of the Super Soaker squirt gun was a NASA Scientist who also helped develop the Stealth Bomber and the Galileo mission to Jupiter.
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