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
The retail price for the iPad would be $1,140 if it were built by American workers instead of Chinese.
100
Forty percent of American adults cannot fill out a bank deposit slip correctly.
155
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
One million Americans, about 3,000 each day, take up smoking each year. Most of them are children.
-86
The United States has paved enough roads to circle the Earth over 150 times.
72
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