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 man named Heraclitus had an illness that made his body swell up with water. To try to sweat it off, he buried himself in a steaming pile of animal poo, but then overheated and died of dehydration.
18
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
The word 'mile' is derived from the Latin word for 1,000 - the number of paces it took the average Roman!
6
Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
271
Napoleon Bonaparte thought torture should be abolished because the information obtained from it is worthless.
25
'⸮' is a punctuation mark that was first proposed in the 1580s to denote sarcasm or irony.
17