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PLANES

The top of the tower on the Empire State Building was originally intended (though never used) as a mooring place for dirigibles.
Houdini was the first man to fly an airplane solo in Australia.
Castor oil is used as a lubricant in jet planes.
An airplane uses more fuel flying at 25,000 feet than at 30,000 feet. The higher it flies, the thinner the atmosphere and the less atmospheric resistance it must buck.
According to the Federal Aviation Authority, United States airlines are four times safer than the airlines of any other country.