Aluminum used to be more valuable than gold!
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In zero gravity, a candle's flame is round and blue.
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Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
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According to studies, men change their minds two to three times more often than women.
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Sound travels about 4 times faster in water than in air.
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Pure water (H2O) does not conduct electricity on its own.
46
Most dust particles in your house come from dead skin.
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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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