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
No one knows who designed the first American Flag.
45
February 1865 is the only month in recorded history to not have a full moon.
83
The first bomb dropped by the Allies on berlin in WW2 killed the only elephant in the Berlin Zoo.
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Leonardo da Vinci was dyslexic, and he often wrote backwards.
77
Tablecloths were originally meant to serve as towels with which guests could wipe their hands and faces after dinner.
78
Two dogs were among the Titanic survivors.
262
In ancient Greece, tossing an apple to a girl was a traditional proposal of marriage. Catching it meant that she accepted.
29