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76. Fact
The tooth is the only part of the human body that can't repair itself.

77. Fact
It takes twice as long to lose new muscle if you stop working out than it did to gain it.

78. Fact
Bone is stronger than some steel.

79. Fact
The feet account for one quarter of all the human body's bones.

80. Fact
About 32 million bacteria call every inch of your skin home.

81. Fact
Humans shed and regrow outer skin cells about every 27 days.

82. Fact
Three hundred million cells die in the human body every minute.

83. Fact
Humans shed about 600,000 particles of skin every hour.

84. Fact
Every day an adult body produces 300 billion new cells.

85. Fact
Every tongue print is unique.

86. Fact
Your body has enough iron in it to make a nail 3 inches long.

87. Fact
The most common blood type in the world is Type O.

88. Fact
Human lips have a reddish color because of the great concentration of tiny capillaries just below the skin.

89. Fact
The colder the room you sleep in, the better the chances are that you'll have a bad dream.

90. Fact
Tears and mucus contain an enzyme (lysozyme) that breaks down the cell wall of many bacteria.

91. Fact
Your body gives off enough heat in 30 minutes to bring half a gallon of water to a boil.

92. Fact
Your ears secrete more earwax when you are afraid than when you aren't.

93. Fact
It is not possible to tickle yourself.

94. Fact
The width of your armspan stretched out is the length of your whole body.

95. Fact
Humans are the only animals to produce emotional tears.

96. Fact
Right-handed people live, on average, nine years longer than left-handed people do.

97. Fact
Women burn fat more slowly than men, by a rate of about 50 calories a day.

98. Fact
Koalas and primates are the only animals with unique fingerprints.

99. Fact
The indentation in the middle of the area between the nose and the upper lip has a name.

100. Fact
Did you know that there are 206 bones in the adult human body and there are 300 in children (as they grow some of the bones fuse together).

101. Fact
Flea's can jump 130 times higher than their own height. In human terms this is equal to a 6ft. Person jumping 780 ft. Into the air.

102. Fact
The most dangerous animal in the world is the common housefly. Because of their habits of visiting animal waste, they transmit more diseases than any other animal.

103. Fact
Snakes are true carnivorous because they eat nothing but other animals. They do not eat any type of plant material.

104. Fact
The world's largest amphibian is the giant salamander. It can grow up to 5 ft. In length.

105. Fact
100 years ago: the first virus was found in both plants and animals.

106. Fact
90 years ago: the grand canyon became a national monument & cellophane is invented.

107. Fact
80 years ago: the food mixer and the domestic refrigerator were invented.

108. Fact
70 years ago: the teletype and pvc (polyvinyl-chloride) were invented.

109. Fact
60 years ago: otto hahn discovered nuclear fission by splitting uranium, teflon was invented.

110. Fact
50 years ago: velcro was invented.

111. Fact
40 years ago: an all-female population of lizards was discovered in armenia.

112. Fact
30 years ago: the computer mouse was invented.

113. Fact
20 years ago: first test-tube baby born in england, pluto s moon, charon, discovered.

114. Fact
10 years ago: first patent for a genetically-engineered mouse was issued to harvard medical school.

115. Fact
5 years ago: the first successful cloning of human embryo.

116. Fact
The smallest bone in the human body is the stapes or stirrup bone located in the middle ear. It is approximately .11 inches (.28 cm) long.

117. Fact
The longest cells in the human body are the motor neurons. They can be up to 4.5 feet (1.37 meters) long and run from the lower spinal cord to the big toe.

118. Fact
There are no poisonous snakes in maine.

119. Fact
The blue whale can produce sounds up to 188 decibels. This is the loudest sound produced by a living animal and has been detected as far away as 530 miles.

120. Fact
The largest man-made lake in the u.s. Is lake mead, created by hoover dam.

121. Fact
The poison arrow frogs of south and central america are the most poisonous animals in the world.

122. Fact
A new born blue whale measures 20-26 feet (6.0 - 7.9 meters) long and weighs up to 6,614 pounds (3003 kg).

123. Fact
The first coast-to-coast telephone line was established in 1914.

124. Fact
The virginia opossum has a gestation period of only 12-13 days.

125. Fact
The stegosaurus dinosaur measured up to 30 feet (9.1 meters) long but had a brain the size of a walnut.

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