During the Cold War, the US had planned to detonate a nuclear weapon on the moon.
25
The exact cause of death and burial site of Genghis Khan is unknown, because all of the 2000 funeral guests and 800 soldiers were killed in order to preserve the secret.
16
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
Tablecloths were originally meant to serve as towels with which guests could wipe their hands and faces after dinner.
78
Al Capone's armored limousine, after being seized by the feds, was later used to protect Franklin Delano Roosevelt (FDR), 32nd President of the US, after the attack on Pearl Harbor.
20
To take an oath, ancient Romans put a hand on their testicles
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