Have you ever wondered what the number 57 on the Heinz ketchup bottle means? Or how many kilograms of rubbish a person produces per day? You can find these and other facts here.

1 Samuel Clemens (Mark Twain) was born and died on days when Halley's Comet was visible. During his lifetime, he predicted that he would die on a day when Halley's Comet was visible.

2 American dollar notes are made of cotton and linen.

3. the number "57″ on the Heinz ketchup bottle stands for the number of varieties of pickles the company once had.

4 Americans generate around one fifth of the world's annual waste. On average, that's about one and a half kilos of waste per person per day.

5 Giraffes and rats can survive longer without water than camels.

6 Our stomach produces a new layer of mucus every fortnight to prevent it from digesting itself.

7. 98% of all murders and rapes are committed by a close family member or friend of the victim.

8 A B-25 bomber flew into the 79th floor of the Empire State Building on 28 July 1945.

9 The Declaration of Independence of the United States was written on hemp paper.

10 The I-dot is called a "tittle" in English.

11 If you throw a sultana into a fresh glass of sparkling wine, it will float up and down the glass incessantly.

12 Benjamin Franklin was the fifth in a line of the youngest son of the youngest son.

13. triskaidekaphobia is the fear of the number 13. paraskevidekatriaphobia is the fear of Friday the 13th, which occurs one to three times a year. In Italy, the number 17 is an unlucky number, while in Japan it is 4. In Spain, people are afraid of Tuesday the 13th.

14 A female ferret dies if she is in heat and cannot find a mate.

15 The chemicals in the human body would be worth €6.25 if they were sold separately.

16 In ancient Rome, a man swore on his testicles in court.

17. the abbreviation ZIP in "ZIP code" stands for "Zoning Improvement Plan" (postcode).

18 Coca-Cola contained coca (whose active ingredient is cocaine) from 1885 to 1903.

19 It is estimated that at any given time, about 0.7% of the world's population is drunk.

20 Each king in a pack of playing cards represents a famous king from history: spades = David, clubs = Alexander the Great, hearts: Charlemagne, diamonds: Caesar.

21. 40% of McDonald's profit comes from the sale of Happy Meals.

22 Each person, including identical twins, not only has a specific fingerprint, but also a unique eye and tongue print.

23 The red circle on the 7-up logo comes from its inventor, who had red eyes. He was albino.

24. 315 entries in Webster's dictionary from 1996 were misspelled.

25 The icon for "Save" in the Microsoft Office programs shows a disc with the shutter the wrong way round.

26 Albert Einstein and Charles Darwin both married their cousins (Elsa Löwenthal and Emma Wedgewood).

27 Camels have three eyelids.

28 John Wilkes Booth's brother saved the life of Abraham Lincoln's son.

29 Warren Beatty and Shirley McLaine are siblings.

30 Chocolate can be fatal for dogs; it attacks the heart and nervous system of dogs.

31 British pilots in the Second World War carried playing cards in their pockets, which could be soaked in water when captured to reveal an escape plan.

32. 55.1% of all prisoners in the USA are behind bars for drug offences.

33 Lipsticks often contain fish scales.

34. killer whales kill sharks by thrusting torpedo-like into the stomach from below and literally exploding the shark.

35 Snails have four noses.

36 Ketchup was sold as a medicine in the 1830s.

37 The famous three monkeys are called Mizaru (see nothing), Mikazaru (hear nothing), and Mazaru (say nothing).

38 In India there is a certificate of freedom for cows.

39 If you sneeze too hard, you can break a rib. If you suppress a sneeze, a blood vessel in your head may burst. If you force your eyes open, they can fall out. (DON'T TRY IT< YOU FOOL)

40th American Airlines saved 40,000 $ in 1987 by removing the olive from the salad in first class.

41 In the USA, around 200,000,000 M&Ms are sold every day.

42 During the Second World War, the Oscars were made of wood, as metal was difficult to obtain.

43 In chess there are 318,979,564,000 possible combinations for the first move.

44 There are no clocks in Las Vegas casinos.

45 Around 150 people are injured by coconuts every year. That's more than shark accidents.

46. 50% of all bank robberies take place on Fridays.

47 The name Wendy has only existed since the book Peter Pan.

48 The first bomb dropped by the Allies in the Second World War killed the only elephant in Berlin Zoo.

49. a raindrop falls on average at a speed of 11 km/h.

50 It took Leonardo Da Vinci 10 years to create the Mona Lisa.