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 Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
The United States consumes 25% of all the world's energy.
51
There is a basketball court on the top floor of the U.S. Supreme Court Building. It’s known as the “highest court in the land.”
24
Colorado switched mile marker "420" to "419.99" to stop people from stealing it.
37
In 1963, the US Military created an artificial ring around Earth, similar to that of the planet Saturn. The ring was made of copper needles and was used for worldwide communications in the case that the Soviets disabled all other methods of communication.
26
The Canadian province of New Brunswick (which was part of the UK at the time) had a bloodless war with the US state of Maine in 1839
36