51. Dragonfly: Eye contains 30,000 lenses.

52. Pig's Tongue contains 15,000 taste buds. For comparison, the human tongue has 9,000 taste buds.

53. The number system was invented by India. Aryabhatta was the scientist who invented the digit zero.

54. Intelligent people have more zinc and copper in their hair.

55. Earth weighs 5,972,000,000, 000,000,000, 000 tons

56. Like fingerprints, everyone's tongue print is different.

57. A duck's quack doesn't echo anywhere

58. Man is the only animal who'll eat with an enemy

59. The average woman uses about her height in lipstick every five years.

60. The first Christmas was celebrated on December 25,

61. AD 336 in Rome.

62. A Cockroach will live nine days without its head, before it starves to death.

63. A chimpanzee can learn to recognize itself in a mirror, but monkeys can't

64. A rat can last longer without water than a camel can

65. About 10% of the world's population is left-handed

66. Dolphins sleep with one eye open

67. Snakes have no external ears. Therefore, they do not hear the music of a "snake charmer". Instead, they are probably responding to the movements of the snake charmer and the flute. However, sound waves may travel through bones in their heads to the middle ear.

68. Many spiders have eight eyes.

69. The tongue of snakes has no taste buds. Instead, the tongue is used to bring smells and tastes into the mouth. Smells and tastes are then detected in two pits, called "Jacobson's organs", on the roof of their mouths. Receptors in the pits then transmit smell and taste information to the brain.

70. Birds don't sweat

71. The highest kangaroo leap recorded is 10 ft and the longest is 42 ft

72. Flamingo tongues were eaten common at Roman feasts

73. The smallest bird in the world is the Hummingbird. It weighs 1oz

74. The bird that can fly the fastest is called a White it can fly up to 95 miles per hour.

75. The oldest living thing on earth is 12,000 years old. It is the flowering shrubs called creosote bushes in the Mojave Desert

76. Tea is said to have been discovered in 2737 BC by a Chinese emperor when some tea leaves accidentally blew into a pot of boiling water.

77. A person can live without food for about a month, but only about a week without water.
If the amount of water in your body is reduced by just 1%, you'll feel thirsty. If it's reduced by 10%, you'll die.

78. Along with its length neck, the giraffe has a very long tongue -- more than a foot and a half long. A giraffe can clean its ears with its 21-inch tongue

79. Ostriches can kick with tremendous force, but only forward. Don't Mess with them

80. An elephant can smell water three miles away

81. If you were to remove your skin, it would weigh as much as 5 pounds

82. A hippopotamus can run faster than a man

83. India never invaded any country in her last 10000 years of history

84. The world's known tallest man is Robert Pershing Wadlow. The giraffe is 5.49m (18 ft.), the man is 2.55m (8ft. 11.1 in.).

85. The world's tallest woman is Sandy Allen. She is 2.35m (7 ft. 7 in.).

86. The only 2 animals that can see behind itself without turning its head are the rabbit and the parrot.

87. The blue whale is the largest animal on earth. The heart of a blue whale is as big as a car, and its tongue is as long as an elephant.

88. The largest bird egg in the world today is that of the ostrich. Ostrich eggs are from 6 to 8 inches long. Because of their size and the thickness of their shells, they take 40 minutes to hard-boil. The average adult male ostrich, the world's largest living bird, weighs up to 345 pounds.

89. Every dolphin has its own signature whistle to distinguish it from other dolphins, much like a human fingerprint

90. The world's largest mammal, the blue whale, weighs 50 tons i.e. 50000 Kg at birth. Fully grown, it weighs as much as 150 tons i.e. 150000 Kg.

91. 90 % of all the ice in the world in on Antarctica

92. Antarctica is DRIEST continent. Antarctica is a desert

93. Antarctica is COLDEST continent, averaging minus 76 degrees in the winter

94. Mercury is the closest planet to the sun and it doesn't have a moon. Its atmosphere is so thin that during the day the temperature reaches 750 degrees, but at night it gets down to -300 degrees.

95. Jupiter is the largest planet. If Jupiter were hollow, you could fit 1000 earths inside! It is made up of gas and is not solid. The most famous feature on Jupiter is its Red Spot, which is actually an enormous hurricane that has been raging on Jupiter for hundreds of years! Sixteen moons orbit Jupiter.

96. Saturn is a very windy place! Winds can reach up to 1,100 miles per hour. Saturn is also made of gas. If you could find an ocean large enough, it would float. This planet is famous for its beautiful rings, and has at least 18 moons.

97. Uranus is the third largest planet, and is also made of gas. It's tilted on its side and spins north-south rather than east-west. Uranus has 15 moons.

98. Neptune takes 165 Earth years to get around the sun. It appears blue because it is made of methane gas. Neptune also has a big Spot like Jupiter. Winds on Neptune get up to 1,200 mile per hour! Neptune has 8 moons.

99. Pluto is the farthest planet from the sun... usually. It has such an unusual orbit that it is occasionally closer to the sun than Neptune. Pluto is made of rock and ice.

100. Just about everyone listens to the radio! 99% of homes in the United States have a least one radio. Most families have several radios.