32. It has been determined that one brow wrinkle is the result of 200,000 frowns.
33. In 1884 evaporated milk was patented by John Mayenburg of St Louis, Missouri, America.
34. There are 35 million digestive glands in the stomach.
34. 27 November 1893 New Zealand went to the polls and for the first time in a national election anywhere in the world, women voted too.
35. In 1948 the first Polaroid cameras went on sale in Boston, Massachusetts, America.
36. All horse racing was banned in Britain because of an outbreak of foot and mouth disease in 1967.
37. A 15th-century Bible was sold at Christie's in London to a New York antiquarian bookseller for $2 million (£1.1 million) in 1991.
38. A rhinoceros has three toes on each foot.
39. In November 1983 thieves broke into the Brinks-Mat security warehouse at Heathrow Airport, London, England, and stole £25 million, ($46 million) worth of gold bullion.
40. Simple, moderately severe sunburn damages the blood vessels to such an extent that it takes 4 to 15 months for them to return to their normal condition.
41. 190,000,000,000,000,000,000 flies could be produced in four months by the offspring of a single pair of flies assuming that all the offspring survived.
42. There are on average 50,000 spiders per acre in green areas. Essential to the balance of nature, spiders annually consume a hundred times their number in insects.
43. The world's most dangerous jellyfish is Australia's box jelly; its toxin is more potent than cobra venom and can kill a person in minutes.
44. The anaconda, which is one of the world's largest snakes, gives birth to its young instead of laying eggs.
45. 80% of the average human brain is water.
46. Because of their extreme elasticity, the lungs are 100 times easier to blow up than a child's toy balloon.
47. A French survey in 1997 found that blue or green-eyed women have the greatest chance of reaching 120!
49. Warsaw, Poland opened the world's first public library in 1747.
50. The ostrich has only two toes, unlike most birds, which have three or four.