1. Sunscreen SPF is a very nonlinear metric. An SPF of 15 blocks 93% of incoming radiation, SPF 30 blocks 97% and SPF 50 blocks 98%.
  2. It's illegal to own 6 or more dildos in Texas.
  3. By the age of 20, a native English-speaking American knows 42,000 dictionary words.
  4. 4% of lost remote controls were later found to be in the fridge or freezer, a survey says.
  5. 5 million Americans play video games for 40 hours a week, the equivalent of a day job.
  6. The U.S. experiences approximately 75% of the world's known tornadoes.
  7. Almost all of the 30 countries with the highest birth rates are in Africa.
  8. Mexican scientists turned a shot of tequila into diamonds by heating it to 800˚C.
  9. An iPhone contains about 0.0012 ounces of gold, 0.012 ounces of silver, and 0.000012 ounces of platinum, worth $1.52, $0.24, and $0.017 respectively.
  10. Henry Ford tried to build an American industrialist utopia in the Brazilian jungle, "Fordlandia", to secure a source of cultivated rubber for his cars.
  11. In 221 AD, Roman Emperor Elagabalus had a dinner party. When the meal was over, he gave the signal for dozens of leopards and lions to be released among his guests.
  12. One of the wealthiest drug lords in history died during a plastic surgery to change his appearance. The two physicians in charge were later found dead, encased in concrete inside steel drums.
  13. No U.S Navy submarine is ever considered "lost" if it does not return. It's considered to be "still on patrol."
  14. 65% of mothers and 70% of fathers exhibited a preference for one child, a study found.
  15. The U.S. has won over 1,000 cumulative gold medals since the founding of the modern Olympic games in 1896.
  16. Because Fidel Castro has chosen not to create a cult of personality, inside Cuba there are no streets, buildings, institutions or localities named for him.
  17. Saddam Hussein's love of a grilled fish dish called masgouf caused the U.S. to discover his hiding place in 2003.
  18. Jimmy Carter installed solar panels on the roof of the White House. Ronald Reagan had them removed.
  19. More than 40% of the Fortune 500 companies in 2010 were founded by an immigrant or the child of an immigrant.
  20. A five-year-old boy passed a Microsoft exam in 2014 to become the youngest person to become a Microsoft Certified Professional.
  21. Gender equality in the workplace could add US$4.3 trillion to the U.S. economy by 2025, a 2016 study found.
  22. One-third of global homicides occur in Latin America, even though the region has just 8% of the world's population, according to UN data.
  23. Michael Phelps, the most decorated Olympian of all time, was bullied as a kid for his gangly form and big ears.
  24. In 2004, a man waited 3 days for the shotgun seat of a helicopter giving Grand Canyon tours only to commit suicide by jumping from the aircraft.
  25. 70% of the time, ice from fast food restaurants was dirtier than toilet water.
  26. Army ants build living bridges by linking their bodies to span gaps and create shortcuts across rainforests.
  27. Alabama didn't lift its ban on interracial marriage until 2000.
  28. 8.5% of adults worldwide currently have diabetes. That's almost twice as much as it was in 1980.
  29. Bras were called "breast bags" in medieval times.
  30. Arabic numerals, like the ones we use today in English, were actually invented in India.
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