The United States does not have an official language.
88
In the U.S. the typical school year is 180 days long. In China, the typical school year is 251 days.
7
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 US national public health institute, Centers for Disease Control and Prevention, has an actual plan in case of zombie invasion.
29
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
Each year, around 24,000 Americans are bitten by rats!
65
In the US, people can be rejected from joining the police force if they are too intelligent.
45