February 1865 is the only month in recorded history to not have a full moon.
83
To take an oath, ancient Romans put a hand on their testicles
426
Romans used a plant called Silphium as contraception. They had so much sex that they drove it into extinction.
24
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
A monk had once written over a book that contained information about calculus that was written by Archimedes in ancient Greece that could have made us 100 or even 1000 years more mathematically and technologically advanced.
13
In 1958, a nuclear bomb was lost somewhere along the swampy coast of Georgia. Its whereabouts remain a mystery to this day.
29