Reading these 50 unbelievable little-known facts will definitely refresh your mind!

1. The divination board got its name in 1890. By asking what the small board should be called, Ouija appeared on it. When people asked what Ouija meant, the divination board said it meant "good luck".

2. In 2010, an IKEA store in Wembley, England, put 100 cats in the store to see what would happen.

3. The United States has the highest gun ownership rate in the world, with 88.8 guns per 100 people.

4. Hedy Lamarr, a famous film and television actress from the 1930s to the 1950s, was also a mathematician. She invented frequency hopping spread spectrum. This technological invention is still used in Bluetooth and Wi-Fi today.

5. In March 1963 in Washington, Martin Luther King Jr. added the phrase "I have a dream" to his impromptu speech, which was not originally in the prepared speech.

6. In 2012, a stray cat became a guide cat for a blind dog named Terfel, using its paws to lead Terfel to every corner of the house.

7. There is an indoor farm in Japan that can produce 10,000 heads of lettuce every day, but saves 99% of the water compared to an outdoor farm.

8. Sandy Island, located between Australia and New Orleans, had been recorded on maps for over a century until a group of scientists sailed there in 2012 and discovered that the island did not exist.

9. There are approximately 7.4 billion people in the world today. Even if all of them were thrown into the Grand Canyon, it would still be impossible to fill the canyon.

10. There are still two McDonald's restaurants selling pizza in the United States. One is in Ohio, and the other is in West Virginia.

11. Actually, quicksand won't suck you to the bottom because your density isn't high enough. But the more you struggle, the more the quicksand liquefies. So as long as you don't panic, at most half of your body will be trapped inside. Unfortunately, most people aren't that calm.

12. In Zhengzhou, China, there is a Korean restaurant where you can eat for free if you are one of the five most attractive customers of the day.

13. A 1978 study tracked 515 people who attempted suicide on the Golden Gate Bridge between 1937 and 1971 but were prevented. 90% were still alive or died of natural causes. The study concluded that suicidal behavior is impulsive and not unstoppable.

14. In 2008, Apple sold 10 million iPhones in one year. In 2015, the iPhone 6 sold 13 million units in its first week of release.

15. By law, no U.S. official can be ranked above George Washington. After his death, he was posthumously awarded the title of General of the Army, the only six-star general in U.S. history.

16. The Chinese government allows civil servants and their families to visit prisons so that they will know the consequences of corruption.

17. In 1972, King Hassan II of Morocco survived an assassination attempt. The king cleverly used his radio to call out to a rebel pilot who was firing heavily at his Boeing 727. He told the pilot that the tyrant was dead and to cease fire. The rebels actually obeyed and stopped the assassination attempt.

18. When you kiss for the first time, the neurotransmitter dopamine is released, making you want to kiss more. Endorphins are released, bringing a feeling of pleasure.

19. Sadie from Oregon started a wildfire in 2013 to keep her idle firefighter friend occupied, but she never expected the fire to spread to 206 square kilometers, costing nearly $8 million and taking two months to bring it under control.

20. In 2015, there was a stray cat in Russia named Masha. On a cold night, she kept a two-month-old abandoned baby warm.

21. Jerusalem is one of the oldest cities in the world. It has been destroyed twice, besieged 23 times, occupied 44 times, and attacked a total of 52 times.

22. In 1915, a millionaire named Cecil Chubb bought Stonehenge for $10,000 for his wife. However, she didn't like it, so in 1918, she sold it to the British. Stonehenge is now worth $51 million.

23. In original Canada, traditional lacrosse consists of 100 to 1,000 players on a field ranging from 500 to 3 kilometers, and matches can typically last for 3 days.

24. A study from the University of Exeter indicates that each shark has a unique personality; some are shy, while others are sociable.

25. Google found that GPA and test scores are not very useful in hiring. 14% of its employees have not attended college.

26. Billionaire Elon Musk didn't like the school his children attended, so he built one himself called Ad Astra, meaning interstellar exploration, so his children could go to space.

27. Michael Cicconetti is a judge in Ohio. His rulings are very creative, and he has special techniques for punishment. For example, a woman who didn't pay her taxi fare was sentenced to walk 30 miles within 48 hours.

28. Black Island is the world's fastest man-made high-altitude strategic reconnaissance aircraft, faster than 4,000 missiles fired at it.

29. When syphilis first appeared, different countries named it after other countries. The British called it the French disease, the French called it the Spanish disease, and the Japanese called it the Chinese hemorrhoid.

30. In the late 19th century, archaeologists discovered a late 9th-century Viking tomb in the Rijksmuseum. Inside the tomb was a ring inscribed with the words "Dedicated to Allah." This suggests trade between the Swedish islands and Islam, dating back over 1000 years.

31. In the 1970s and 1980s, Miami had a high crime rate, and the Dade County Medical Examiner’s Office had to borrow a refrigerated trailer from Burger King to store an excess of corpses.

32. Following the Fukushima nuclear accident in 2011, more than 200 people, all over 60 years old, volunteered to help with the nuclear crisis.

33. Psychologists at Brunel University have found that people who like to show off their diet and fitness results on Facebook are narcissists.

34. If the United States had its first female president, her husband would be called the First Gentleman.

35. Felix Kiprono, a Kenyan lawyer, wanted to offer President Obama and First Lady Michelle Obama 50 cows, 70 sheep, and 30 goats as a marriage proposal to their daughter Maria. He didn't know why they refused.

36. This tool can perfectly scrape the Nutella chocolate sauce jar clean.

37. Richard once lost a bet with AirAsia CEO Tony about winning the 2010 Abu Dhabi International Grand Prix. The punishment was that he had to work as a flight attendant on Tony's plane.

38. When your eyes move, your brain restricts your vision. So you can't see your eyes moving in a mirror. This is called saccade occlusion. Without this phenomenon, your life would be like watching a continuously playing movie with a shaky screen, as if filmed with a handheld camera.

39. When Steven Spielberg first applied to the USC School of Cinematic Arts, he was rejected three times by the same admissions officer. When the school awarded him an honorary doctorate, he agreed to accept it on the condition that the employee who had initially rejected him sign the doctorate certificate. They actually did.

40. A man named Chito saved a dying crocodile named Pocho. After recovering, Pocho refused to leave its savior. To this day, they remain inseparable.

41. In 1910, when asked how many years of annual leave workers should take, President Taft suggested three months.

42. In ancient Egypt, people who were short in stature were considered to have special talents. They were treated as gods and had the highest social status.

43. There is a small town in Texas called Earth. It is the only officially recognized place on Earth.

44. On December 16, 2002, Yao Ming played his first NBA game. To promote the game, the Heat distributed 8,000 fortune cookies. However, this had no effect on Yao Ming because he had never seen fortune cookies in China and believed that they were invented in the United States.

45. In 2015, a British Airways passenger's poop smelled so bad that the pilot was so disgusted that he turned back.

46. ​​People often sneeze when they stare at the sun; this is called the phototropic sneeze reflex. It is also known as Acute Chorionic Spontaneous Phototaxis Syndrome (ACHOO).

47. In 2004, a pine tree was clocked in a Los Angeles park to commemorate Beatles member George, who died from a beetle infestation. The annotation is ironic.

48. Studies show that if women text their partners more often, both partners are happier. However, if men in a relationship text more often, both partners are less happy, and women are more likely to consider breaking up.

49. When a German official saw the painting Guernica, he asked Picasso, "Did you paint this?" The painting depicted the German Luftwaffe bombing the Spanish town of Guernica. Picasso's answer was simple: "No, you painted it."

50. There is an Asian elephant named Koshik. It can put its trunk into its mouth to mimic human speech. It can speak Korean, for example, hello, great, no, sit down, lie down.