February 1865 is the only month in recorded history to not have a full moon.
83
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
There are 92 known cases of nuclear bombs lost at sea.
148
Clocks made before 1660 had only one hand - an hour hand.
41
No one knows who designed the first American Flag.
45
Tickling was a form of torture used in ancient China on nobility because it left no mark and recovery was quick.
33
In 1982, a high school student from Los Angeles, California unscrambled the Rubik's Cube in 22.95 seconds.
60