There are six times as many people of Irish descent living in America than in Ireland.
15
During the Cold War, the US had planned to detonate a nuclear weapon on the moon.
25
Teddy bears were named after U.S. President Theodore 'Teddy' Roosevelt.
23
Wyoming has only 2 sets of escalators in the entire state.
17
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
In 2005, 25 percent of Americans over the age of 50 played video games, an increase from nine percent in 1999.
82
Colorado switched mile marker "420" to "419.99" to stop people from stealing it.
37
No president of the United States was an only child for his parents.
51