1. A UN report stated that 4 million people died in Indonesia as a result of famine and forced labor during the WW2 Japanese occupation.
  2. Scientists have created a functioning guitar the size of a human blood cell.
  3. Instead of "Once upon a time," many Korean folktales begin with "Back when tigers used to smoke..."
  4. Microwave ovens were invented by accident. Percy Spencer was standing in front of an active radar set when he noticed the candy bar he had in his pocket had melted.
  5. The Mediterranean Sea dried up
    about 5 million years ago,
    after it was sealed off
    from the Atlantic Ocean.
  6. The sun's surface is blisteringly hot at 10,340℉. while its atmosphere is another 300 times hotter.
  7. In 1983, the average life expectancy for a person with Down Syndrome was only 25 years old. It is now 60 years old.
  8. Astronomers estimate that the observable universe has more than 100 billion galaxies.
  9. When astronauts spend long periods of time at zero gravity in space, their hearts become more spherical and lose muscle mass.
  10. Tupac's last known words were "fuck you" spoken to police officers trying to gather information on his shooter.
  11. The US Postal Service handles 47% of the entire world's mail.
  12. A series of studies found that couples who were more grateful toward each other were more likely to still be together 9 months later.
  13. Saying "Thank you" makes people see you as a warmer person, a study found.
  14. Research found that Dutch men, at 182.5 centimeters (about 6 feet), and Latvian women, at 170 centimeters (5 feet 7 inches), are the tallest in the world.
  15. Interrogative self-talk --e.g. Will I go for a run today?-- is more motivating than declaring something to be true, a study found.
  16. Wolves became tamer companions and evolved into dogs about 27,000 years ago.
  17. In Japan, the likelihood of being killed by a gun is about the same as an American's chance of being killed by lightning.
  18. According to Google Trends, Texas searches for "plus-size lingerie" more frequently than any other U.S. state around Valentine's Day.
  19. Contrary to popular belief, Kansas is not the flattest state in the U.S. Florida is.
  20. It is possible to determine a person's gender from a fingerprint. Women secrete twice as many amino acids as men and in a distinct distribution, studies say.
  21. When dropped from the same height, a hardened steel ball will actually bounce higher than a rubber ball of the same size.
  22. The first animals in space were fruit flies, launched in a rocket by the US in 1947. They were still living when recovered.
  23. Monkeys can be Machiavellian.
  24. The Earth's atmosphere
    is made up of
    21% of oxygen.
  25. A solar plane made history in 2016 after completing a round-the-world trip using no fossil fuel.
  26. New York City, at 8.4 million (2013) has a higher population than 39 out of the 50 U.S. States.
  27. Psychopaths tend to have a poor sense of smell, a study found.
  28. From 2001 to 2009, Donald Trump was a registered Democrat.
  29. Over a quarter of unmarried Japanese males aged 30-40 are virgins.
  30. Music, painting, poetry, literature and architecture, all used to be part of the modern Olympic Games from 1912 to 1948.
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