The first semi-permanent settlements appeared in Florida around 5000 B.C.
10
A typical full-time worker in the US with a four-year college degree earns about $50,000. This is 62% more than a worker with only a high-school diploma.
72
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
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
In the US, people can be rejected from joining the police force if they are too intelligent.
45
The US national public health institute, Centers for Disease Control and Prevention, has an actual plan in case of zombie invasion.
29
Outside of the bedroom, the most common place for adults in the U.S. to have sex is the car.
391