In 2005, 25 percent of Americans over the age of 50 played video games, an increase from nine percent in 1999.
82
During the Cold War, the US had planned to detonate a nuclear weapon on the moon.
25
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Forty percent of American adults cannot fill out a bank deposit slip correctly.
155
The United States consumes 25% of all the world's energy.
51


