An adult produces enough hydrogen in their urine each year to drive a car 2,700 kilometres.

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A Chinese woman Ching Shih, nicknamed Mistress Zheng, was the most successful pirate in history. Ching's fleet consisted of approximately 400 pirate ships, and her army numbered 40,000 pirates. At the peak of her power, her army reached 80,000 members.

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Sailors once thought wearing gold earrings improved eyesight.

Earrings may have given pirates a bit of fashionable flair, but the accessories weren't worn simply for stylish reasons. Some pirates thought earrings could improve eyesight and ward off seasickness.

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A person who hides their pain behind a smile is called an “eccedentesiast.”

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The record for longest time without sleep was set in 1963 when 17 year-old Randy Gardner stayed awake on purpose for 11 straight days.

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Pandas do not have a special place to sleep, neither a bed nor a nest. Therefore, they fall asleep where they found themselves at the moment of fatigue.

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Onions are toxic to dogs. They can cause hemolytic anemia and result in death. A 45-lb. dog would only have to eat one medium to large onion to experience dangerous toxicity levels.

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Leonardo da Vinci worked on the Mona Lisa for 15 years. By the time he died in 1519, he still didn’t consider it finished.

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Capgras syndrome (CS) , this is a delusional misidentification syndrome where the victim is convinced that their loved ones (family, pets, close friends) are replaced by imposters. Sometimes, the delusion is about more distant people, pets, or even objects. No amount of reasoning can change their minds.

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The human nose can recognise over 1,000,000,000,000 different smells.

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The founder of KFC was a loser until he was 65, he had no money, he borrowed $87 and started making fried chicken wings. He failed 1,009 times before he was able to sell his first franchise. By age 88, he became a billionaire.

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To stay cool in hot temperatures, kangaroos lick their arms until the fur and skin are sopping wet. The wind hitting their arms causes the saliva to evaporate and cool them off.

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The world's largest mountain range is under the sea.

Mount Everest or Kilimanjaro are likely the massive mountains you know by name. But if you're looking for the longest mountain range on Earth, you'd need to check out the mid-ocean ridge, which the National Ocean Service reports stretches for 40,389 miles, with 90 percent of it under the sea.

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The Sodium Lauryl Sulfate in toothpaste suppresses sweetness receptors, which is why juice tastes so bad after brushing your teeth.

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