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
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
The first semi-permanent settlements appeared in Florida around 5000 B.C.
10
Seven U.S. states are named after sovereigns - four kings and three queens.
5
The United States consumes 25% of all the world's energy.
51
In March, 2014, Colorado sold $19 million dollars worth of Cannabis. $1.9 million went to schools and crime fell by 10%.
6
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