The US national public health institute, Centers for Disease Control and Prevention, has an actual plan in case of zombie invasion.
29
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 Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
The United States does not have an official language.
88
In 1700s, the deer skin was a common medium of exchange between the trading settlers and the native Red Indians in America. This is how a buck became a slang for a dollar.
28
The average American spends a third of their overall time online playing games and using social networks.
298
In 75% of American households, women manage the money and pay the bills.
97