25 curious knowledges.


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  1. The world's smallest mammal is the bumblebee bat, also known as Kitti's hog-nosed bat.
  2. Honey never spoils. Archaeologists have found pots of honey in ancient Egyptian tombs that are over 3,000 years old and still edible.
  3. The Great Wall of China is not visible from space with the naked eye, contrary to popular belief. It is, however, visible from low Earth orbit.
  4. The average person will spend about six months of their life waiting for red traffic lights to turn green.
  5. The shortest war in history was between Britain and Zanzibar in 1896, lasting only 38 minutes.
  6. The world's largest known diamond, called the Cullinan Diamond, weighed over 3,100 carats when discovered in 1905.
  7. The blue whale is the largest animal ever known to have existed on Earth, with a heart the size of a small car.
  8. The "six degrees of separation" concept suggests that any two people in the world can be connected through a chain of six or fewer acquaintances.
  9. The Eiffel Tower in Paris was originally intended to be a temporary structure for the 1889 World's Fair and was almost torn down after the event.
  10. The word "nerd" was coined by Dr. Seuss in his book "If I Ran the Zoo" in 1950.
  11. Bananas are berries, whereas strawberries are not.
  12. The Great Barrier Reef, located off the coast of Australia, is the largest living structure on Earth and is visible from space.
  13. The world's oldest known sample of the smallpox virus was found in the teeth of a 17th-century child buried in Lithuania.
  14. There are more possible iterations of a game of chess than there are atoms in the known universe.
  15. The first recorded game of baseball was played in 1846 in Hoboken, New Jersey, USA.
  16. The shortest war in U.S. history was the "Aroostook War," which lasted for less than a day in 1839 between the U.S. and the U.K. over a disputed border in Maine.
  17. The world's oldest known recipe, a Babylonian clay tablet from around 1750 BCE, contains instructions on how to make beer.
  18. The human brain has the capacity to generate about 50,000 thoughts per day.
  19. The average person will spend approximately 25 years asleep during their lifetime.
  20. The world's first computer programmer was Ada Lovelace, an English mathematician, and writer, who wrote an algorithm for Charles Babbage's Analytical Engine in the mid-19th century.
  21. The word "trivia" comes from the Latin "trivium," which referred to the three subjects of grammar, rhetoric, and logic that formed the foundation of a medieval education.
  22. The "butterfly effect" is a concept in chaos theory that suggests a small change in one part of a system can have significant effects elsewhere, similar to the flap of a butterfly's wings potentially causing a tornado on the other side of the world.
  23. The average person will spend about six months of their life brushing their teeth.
  24. Cows have best friends and can form strong social bonds with other cows.
  25. The world's oldest known living tree, named Prometheus, was estimated to be over 4,900 years old when it was cut down in 1964.