2. The world’s deepest postbox is in Susami Bay in Japan. It’s 10 meters (32 ft) underwater.
3. In 2007, an American man named Corey Taylor tried to fake his own death in order to get out of his cell phone contract without paying a fee. It didn’t work.
4. In 1923, jockey Frank Hayes won a race at Belmont Park in New York despite being dead — he suffered a heart attack mid-race, but his body stayed in the saddle until his horse crossed the line for a 20–1 outsider victory.
5. Everyone has a unique tongue print, just like fingerprints.
6. Most Muppets are left-handed. (Because most Muppeteers are right-handed, so they operate the head with their favored hand.)
7. It costs the U.S. Mint almost twice as much to mint each penny and nickel as the coins are actually worth. Taxpayers lost over $100 million in 2013 just through the coins being made.
8. Casu marzu is a Sardinian cheese that contains live maggots. The maggots can jump up to five inches out of cheese while you’re eating it, so it’s a good idea to shield it with your hand to stop them jumping into your eyes.
9. Light doesn’t necessarily travel at the speed of light. The slowest we’ve ever recorded light moving at is 38 mph.
10. The loneliest creature on Earth is a whale who has been calling out for a mate for over two decades — but whose high-pitched voice is so different to other whales that they never respond.
11. During World War II, the crew of the British submarine HMS Trident kept a fully grown reindeer called Pollyanna aboard their vessel for six weeks (it was a gift from the Russians).
12. The first man to urinate on the moon was Buzz Aldrin, shortly after stepping onto the lunar surface.
13. The top of the Eiffel Tower leans away from the sun, as the metal facing the sun heats up and expands. It can move as much as 7 inches.
14. There’s an opera house on the U.S.–Canada border where the stage is in one country and half the audience is in another.
15. The katzenklavier (“cat piano”) was a musical instrument made out of cats. Designed by 17th-century German scholar Athanasius Kircher, it consisted of a row of caged cats with different voice pitches, who could be “played” by a keyboardist driving nails into their tails.
16. There is a single mega-colony of ants that spans three continents, covering much of Europe, the west coast of the U.S., and the west coast of Japan.
17. The largest snowflake ever recorded reportedly measured 15 inches across.
18. An epidemic of laughing that lasted almost a year broke out in Tanganyika (now Tanzania) in 1962. Several thousand people were affected, across several villages. It forced a school to close. It wasn’t fun, though — other symptoms included crying, fainting, rashes, and pain.
19. The Romans used to clean and whiten their teeth with urine. Apparently it works. Please don’t do it, though.
20. . There are around 60,000 miles of blood vessels in the human body. If you took them all out and laid them end to end, they’d stretch around the world more than twice. But, seriously, don’t do that either.