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
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 last time American Green cards were actually green was 1964.
60
When Charles Darwin first discovered the Galapagos Tortoises, he tried to ride them!
18
The flushing toilet was invented in 1596, not by Thomas Crapper as most people think, but by Sir John Harington.
98
Ancient Romans at one time used human urine as an ingredient in their toothpaste.
37
Until President Kennedy was killed, it wasn't a federal crime to assassinate the President.
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