1. About 7% of all the potatoes grown in the U.S. are turned into McDonald's fries.
  2. Aspiring actor Leonard Nimoy once gave a cab ride to future president John F Kennedy.
  3. A software company buried a US$1,000 prize deep in its License Agreement to see if anyone actually read them. It took 5 months and 3,000 sales for someone to ask about the prize.
  4. 40% of Americans are breathing unhealthy air, according to a report by the American Lung Association.
  5. Dolphins can communicate with one another over a telephone, and appear to know who they are talking to.
  6. About 1 million Japanese men are estimated to be locking themselves in their bedrooms for years, creating social and health problems, a condition called "Hikikomori."
  7. One drop of the Beaked Sea Snake venom can kill 3 adult men.
  8. Martin Luther King Jr. was the youngest person to win the Nobel Peace Prize until Malala won it on 2014.
  9. Rats can copulate in 2 seconds.
  10. David Bowie performed at the Berlin Wall in 1987 while East Germans gathered to listen behind. You could hear them cheering and singing along from the other side.
  11. Dogs wag their tails to the right when they're happy and to the left when they're frightened.
  12. In 1943, a fissure opened in a farmer's cornfield in Mexico, growing into a five story tall volcano in only a week and up to 1,100 feet after a year.
  13. If you die homeless or with no money in New York City, you are buried by prisoners on Hart Island in a mass grave: up to 1000 per grave for children and 50 for adults.
  14. In India, many brides use the "Bichiya": a wedding ring for the toe.
  15. A Burkini is a type of swimsuit for Muslim women, which covers the whole body except the face, the hands and the feet.
  16. The Egyptian Kahun Papyrus (1850 B.C.) suggests crocodile feces either for preventing conception or as an abortifacient.
  17. Over 16,000 religious festivals across Spain are said to involve animal cruelty. About 60,000 animals die every year on them.
  18. Snakes used in snake charming performances respond to movement, not sound.
  19. Giraffes are kosher for eating, according to Judaism.
  20. In their first year of life, baby blue whales gain 200 pounds (91 kg) every day.
  21. 90%
    of all meteorites ever found have come from Antarctica.
  22. In 2012, divers discovered a 2,000-year-old Roman shipwreck that was so well preserved even the food was intact in its storage jars.
  23. The estimated value of the cash, bonds and jewellery carried by The Titanic's passengers was US$6,000,000.
  24. Martin Luther King Jr.'s last public speech foretold his death.
  25. The 2011 earthquake near Japan increased the Earth's rotation speed, shortening the day by 1.8 microseconds.
  26. Leonardo Da Vinci was a prankster: he would put fake wings and horns on lizards to scare people in the Vatican.
  27. A rat can last longer without water than a camel.
  28. The dot over the letters i and j is called a "tittle."
  29. When Apollo 11 landed on the moon, it only had about 25 seconds of fuel left.
  30. The CIA had a secret office on the 25th floor of 7 World Trade Center, another nearby building that collapsed after the 9/11 attacks.
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