Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
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Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
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Most dust particles in your house come from dead skin.
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Iron weighs more after it rusts.
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The force of a suction cup is calculated using F=AP.
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A cubic yard of air weighs about 2 pounds at sea level.
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One barrel of petroleum holds 42 gallons.
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