Approximately 40% of the U.S. paper currency in circulation was counterfeit by the end of the Civil War.
47
Leonardo da Vinci was dyslexic, and he often wrote backwards.
77
The flushing toilet was invented in 1596, not by Thomas Crapper as most people think, but by Sir John Harington.
98
In 1963, the US Military created an artificial ring around Earth, similar to that of the planet Saturn. The ring was made of copper needles and was used for worldwide communications in the case that the Soviets disabled all other methods of communication.
26
Napoleon had conquered Italy by the time he was twenty-six.
74
The last time American Green cards were actually green was 1964.
60