Cataplexy is a rare sleep disorder that causes sufferers to fall asleep whenever they laugh

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Putting sugar on a wound or cut will greatly reduce pain and speed up the healing process.

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Giraffes are 30 times more likely to get hit by lightning than people. True, there are only five well-documented fatal lightning strikes on giraffes between 1996 and 2010. But due to the population of the species being just 140,000 during this time, it makes for about 0.003 lightning deaths per thousand giraffes each year. This is 30 times the equivalent fatality rate for humans.

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This is the world’s smallest artificial heart. It kept a 16-month-old baby alive for 13 days until a donor heart became available.

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The human brain has enough memory to hold three million hours of television. The brain's memory is 2.5 petabytes. You would have to leave the TV running continuously for more than 300 years to use up all that storage.

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The shortest land border is 150 meters long and is shared by Botswana and Zambia

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Cows have best friends and can become stressed when they are separated from them. They form strong social bonds with other cows.

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One of the four major deserts in China has disappeared as 93.24% of the devastated lands have become green. All thanks to the local residents who have been planting trees in the desert for 60 years

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The average erect gorilla penis is 1.25 inches (3cm) long, the average chimp or bonobo penis comes in at around 3.1″ (8cm) and the average human penis stands at around 5.1″ (13cm). Most primates, including chimpanzees, have a penis bone and achieve erections through muscle contraction.

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Watching a 90-minute horror movie can, on average, burn approximately 150 calories, which is the same amount as a 30-minute walk.

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This is the Salvator Mundi, the most expensive painting ever sold. It depicts Jesus holding a transparent orb with his left hand and signing a cross with his right. It was sold in 2017 for $450.3M

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The Netherlands sends Canada 20,000 tulips each year as a token of gratitude for its help during World War II.

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

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