Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
The United States has paved enough roads to circle the Earth over 150 times.
72
There are six times as many people of Irish descent living in America than in Ireland.
15
A Native American tribe in South Dakota collects bottle caps left by campers, using them as currency. Several banks in the area now recognize the caps as legal tender.
225
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
16 percent of Americans will receive one speeding ticket this year and it will cost them on average $150 per ticket.
42
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