Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
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Indoor pollution is 10 times more toxic than outdoor pollution.
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The hair of an adult man or woman can stretch 25 percent of its length without breaking.
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Sound travels about 4 times faster in water than in air.
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A 'jiffy' is an actual unit of time for 1/100th of a second!
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Aluminum used to be more valuable than gold!
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4.5 pounds of sunlight strike the Earth each day.
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