Leonardo da Vinci was dyslexic, and he often wrote backwards.
77
A female photographer in the 50s took tens of thousands of pictures and remained remained unknown until her death. She is now considered one of the most important street photographers ever.
20
A singing birthday card has more computing power than the allied forces in 1945.
30
The average life span of a peasant during the medieval ages was 25 years.
68
France’s King Louis XIV was offered biological weapons by an Italian chemist. He not only refused, but also paid the chemist an annual salary to never reveal the technology to anyone else.
21
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57