In the U.S. the typical school year is 180 days long. In China, the typical school year is 251 days.
7
In the US, it is legal for women to be publicly topless in 33 states. Male toplessness became legal in 1936.
4
According to a study by the National Science Foundation, only half of Americans believe in evolution, and one in 4 don't know that the Earth orbits the Sun.
14
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
Although African-Americans make up only 13% of the U.S. population, they accounted for one half of the estimated new HIV/AIDS diagnoses in 2004.
70
The United States has paved enough roads to circle the Earth over 150 times.
72
In downtown Churchill, Manitoba, it's illegal to lock your car doors in case someone needs to escape from a polar bear.
15