Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
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One cubic foot of gold weighs more than 1,200 pounds!
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Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
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The bark of an older redwood tree is fireproof.
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Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
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Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
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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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