Most dust particles in your house are made from dead skin!
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Scientists are now able to grow 'beating' heart tissue in a lab!
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The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Aluminum used to be more valuable than gold!
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A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
Sound travels about 4 times faster in water than in air.
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