The average American spends a third of their overall time online playing games and using social networks.
298
No president of the United States was an only child for his parents.
51
There are two credit cards for every person in the United States.
2
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
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
