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
Americans throw out 4.5 pounds of trash a day - twice that of 40 years ago.
76
The retail price for the iPad would be $1,140 if it were built by American workers instead of Chinese.
100
The first semi-permanent settlements appeared in Florida around 5000 B.C.
10
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
Approximately 4 to 5% of the U.S. population has one or more clinically significant phobias in a given year. Specific phobias occur in people of all ages. The average age of onset for social phobia is between 15 and 20 years of age, although it can often begin in childhood.
30
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