The first semi-permanent settlements appeared in Florida around 5000 B.C.
10
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
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
American school children rank 25th in math and 21st in science out of the top 30 developed countries, but ranked 1st in confidence that they outperformed everyone else.
7
The U.S. has 115,000 janitors, 83,000 bartenders, 323,000 restaurant servers, and 80,000 heavy-duty truck drivers with bachelor’s degrees.
15
According to a 2014 study, 1 in 10 Americans think HTML is a sexually-transmitted disease.
8