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). The world's largest amphibian is the giant salamander. It can grow up to 5 ft. in length.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.When glass breaks, the cracks move at speeds of up to 3,000 miles per hour.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.The heaviest human brain ever recorded weighed 5 lb. 1.1 oz. (2.3 kg.).Lake Baikal is the deepest lake in the world.The oldest multicellular fossils date from ~700 million years ago.The first coast-to-coast telephone line was established in 1914.