Grenades were invented in China over 1,000 years ago.
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Each king in a deck of playing cards represents a great king from history: spades - King David, clubs - Alexander the Great, hearts - Charlemagne, and diamonds - Julius Caesar.
33
Tickling was a form of torture used in ancient China on nobility because it left no mark and recovery was quick.
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Originally, Du Pont, Inc. was a tiny gun powder mill in New Jersey.
20
"Yo momma" jokes/insults were invented by Shakespeare.
39
Leonardo Da Vinci made a robotic lion in 1515 that would walk, sway, open its mouth and move its tail - it even had a compartment that opened to present flowers.
22
Approximately 25,000 workers died during the building of the Panama Canal, and approximately 20,000 of them contracted malaria and yellow fever.
14
Ancient Greeks believed that redheads turned into vampires after they died.
40