Grenades were invented in China over 1,000 years ago.
50
In 1982, a high school student from Los Angeles, California unscrambled the Rubik's Cube in 22.95 seconds.
60
Contrary to popular belief, the first ironclad warships were built by Korea in the 16th century.
14
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
A B-25 bomber airplane crashed into the 79th floor of the Empire State Building on July 28, 1945.
30
Approximately 25,000 workers died during the building of the Panama Canal, and approximately 20,000 of them contracted malaria and yellow fever.
14
Cleopatra wasn't Egyptian; she was Greek.
107
Napoleon constructed his battle plans in a sandbox.
573