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
Harry S. Truman was the last U.S. President with no college degree.
55
Cleopatra married two of her brothers.
47
In 1963, the US Military created an artificial ring around Earth, similar to that of the planet Saturn. The ring was made of copper needles and was used for worldwide communications in the case that the Soviets disabled all other methods of communication.
26
Modern humans first appeared about 200,000 years ago, but record keeping didn't begin until about 6,000 years ago. That means about 97% of human history is lost.
21
Until President Kennedy was killed, it wasn't a federal crime to assassinate the President.
341
After Germany surrendered in WW2, people in Moscow partied until the entire city actually ran out of vodka.
66