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
A Kodak engineer constructed the first digital camera in 1975. They didn't want to go digital. They went bankrupt in 2012.
9
Recently, archaeologists excavating in the old medieval town of Odense in Denmark uncovered 700-year-old barrels of poop - and, to their surprise, they still smelt.
11
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
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
In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
130