No one knows who designed the first American Flag.
45
The universally popular Hershey bar was used overseas during World War II as currency.
112
Leonardo Da Vinci predicted the mass use of solar energy as long ago as 1447.
153
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
Clocks made before 1660 had only one hand - an hour hand.
41
Until President Kennedy was killed, it wasn't a federal crime to assassinate the President.
341