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• There are 230 joints in the human body.

• The average human head weighs about eight pounds.

• The kidneys filter over 400 gallons of blood each day.

• J. Edgar Hoover wouldn't let his drivers make left turns.

• Penguins have an organ above their eyes that converts salt water to fresh water.

• The metal band that connects the pencil eraser to the end of the pencil is called a Ferrule.

• The little piece of cartilage that sticks out at the front side of your ear is called the Tragus.

• The points of light that you see behind your eyelids when you shut your eyes really hard are called Phosphenes.

• There are 104 stitches on a baseball.

• A boomerang will return to the thrower even in space.

• The top of the Empire State building was built to anchor blimps.

• Mercury is the only metal liquid at room temperature.
  

• Thermometers were once filled with brandy.

• 3.5% of the oceans is dissolved salt.

• Brussel sprouts were discovered in Brussels.

• Swedish fish are neither.

• Blood is six times thicker than water.
  

• Andromeda is the nearest galaxy.
  

• Scooby Doo's first name is Scoobert.

• The word "corduroy" comes from the French "cord du roi" or "cloth of the king."

• Coca-cola was originally sold as a brain tonic.

• The only royal palace in the United States is in Honolulu.

• A Tyranosaurus can yield about 450 gallons of gasoline.

• The male angler fish permanently attaches himself to the female and becomes absorbed by her body.

• Albert Einstein was offered the presidency of Israel.
  

• The average married woman in seventeenth-century America gave birth to thirteen children.

• The hyena gives birth through its clitoris.

• A pangram is a sentence that uses all the letters of the alphabet. (The quick brown fox jumps over the lazy dog.)

• Fingernails are made of a protein called Keratin.

• The pin in a door hinge is called a pintle.

• Mark Twain was born on the day of the appearance of Halley's Comet in 1835, and died on the day of its next appearance in 1910. He himself predicted this in 1909, when he said: "I came in with Halley's Comet in 1835. It is coming again next year, and I expect to go out with it."

• A bag of 1,000 quarters weighs 13.42 lbs.
  

• You can't sneeze in your sleep.

• Siphonapterology is the study of fleas.

• Morphine is named after the Greek god of sleep.

• Pigs can get a suntan.

• Ostriches don't bury their heads in the sand.

• There are 31,557,600 seconds in a year.

• Hitler's favorite movie was King Kong.