1. Saying "Thank you" makes people see you as a warmer person, a study found.
  2. 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.
  3. Interrogative self-talk --e.g. Will I go for a run today?-- is more motivating than declaring something to be true, a study found.
  4. Wolves became tamer companions and evolved into dogs about 27,000 years ago.
  5. In Japan, the likelihood of being killed by a gun is about the same as an American's chance of being killed by lightning.
  6. According to Google Trends, Texas searches for "plus-size lingerie" more frequently than any other U.S. state around Valentine's Day.
  7. Contrary to popular belief, Kansas is not the flattest state in the U.S. Florida is.
  8. 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.
  9. When dropped from the same height, a hardened steel ball will actually bounce higher than a rubber ball of the same size.
  10. The first animals in space were fruit flies, launched in a rocket by the US in 1947. They were still living when recovered.
  11. Monkeys can be Machiavellian.
  12. The Earth's atmosphere
    is made up of
    21% of oxygen.
  13. A solar plane made history in 2016 after completing a round-the-world trip using no fossil fuel.
  14. New York City, at 8.4 million (2013) has a higher population than 39 out of the 50 U.S. States.
  15. Psychopaths tend to have a poor sense of smell, a study found.
  16. From 2001 to 2009, Donald Trump was a registered Democrat.
  17. Over a quarter of unmarried Japanese males aged 30-40 are virgins.
  18. Music, painting, poetry, literature and architecture, all used to be part of the modern Olympic Games from 1912 to 1948.
  19. 270 scientists re-ran 100 studies published in the top psychology journals in 2008. Only half the studies could be replicated successfully.
  20. In 2016, a man blaming a game company for "ruining his life" with game addiction, crashed a car into their head office in South Korea.
  21. Neither
    of George W. Bush's
    are Republican.
  22. Brain age decreases by 0.95 years for each year of education, and by 0.58 years for every daily flight of stairs climbed, a study found.
  23. After being the King of Spain, Naples and Sicily, the elder brother of Napoleon Bonaparte moved to New Jersey.
  24. When he first moved to Los Angeles, the actor who plays "The Most Interesting Man in the World" worked as a garbage truck driver.
  25. Thanks to the "ice bucket challenge," donors raised US$100 million for ALS research in just one month of 2014, compared with US$2.8 million during the same period the previous year.
  26. Tango originated in the brothels surrounding Buenos Aires, Argentina, and was meant to dramatize the relationship between a prostitute and her pimp.
  27. There's up to US$60 billion in sunken treasure sitting at the bottom of the world's oceans.
  28. Starting in 2017, San Francisco will require new buildings to have solar panels.
  29. 30% of mass killings appear to have been inspired by previous killings covered by media, a study found.
  30. New Mexico isn't really named after Mexico, since it was named in 1563 and Mexico didn't drop its "New Spain" name until 1821.
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