Nillionaire: a person with little or no money of their own

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The construction of the Great Wall of China took over 2 thousands years.

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If you've ever finished a great book and found yourself struggling to reconnect with the real-world, you may have had what's called a "book hangover." They can last for up to two weeks.

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A disorder called Koro Syndrome causes humans to irrationally believe their genitals are shrinking. This condition is mostly found in China, Japan and India.

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1 kilogram of chips is 200 times more expensive than 1 kilogram of potatoes!

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When it is time to give birth, the female shark loses her appetite so that she is not tempted to eat her own cubs.

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Lemon juice can help reduce the itching and swelling caused by insect bites.

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Owls can't rotate their eyes, but they can perfectly rotate their heads 360 degrees

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Anhedonia is the inability to feel pleasure.

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A rainbow that appears at night is called a "moonbow."

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Butterflies can't fly if they're cold.

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A cat's sensitivity to sound volume is 3 times that of a human. And cats sense odours 14 times more strongly than humans.

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Alexithymia describes a person who has a difficult time expressing their feelings to others.

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Scientists have found that it is over Rio de Janeiro that the sky looks bluer than anywhere else on Earth.

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A protein in human saliva called histatin can help wounds heal faster! "Licking Your Wounds" works.

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Your brain can't actually feel pain because it lacks pain receptors. A headache is caused by receptors in the protective tissue that surrounds your brain.

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There are medicines you can take that bind to sulfur compounds so your farts don't smell.

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Consecotaleophobia is the fear of chopsticks.

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After a large meal, lions can sleep for up to 24 hours straight.

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Polar bears cover their noses with their paws to make themselves invisible.

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