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 Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
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A 'jiffy' is an actual unit of time for 1/100th of a second!
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At room temperature, the average air molecule travels at the speed of a rifle bullet.
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Sound travels about 4 times faster in water than in air.
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Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
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