1) 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).
5) The world's largest amphibian is the giant salamander. It can grow up to 5 ft. in length.
6) 100 years ago: The first virus was found in both plants and animals.
7) 90 years ago: The Grand Canyon became a national monument & Cellophane is invented.
8) 80 years ago: The food mixer and the domestic refrigerator were invented.
9) 70 years ago: The teletype and PVC (polyvinyl-chloride) were invented.
10) 60 years ago: Otto Hahn discovered nuclear fission by splitting uranium, Teflon was invented.
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