The first semi-permanent settlements appeared in Florida around 5000 B.C.
10
During the Cold War, the US had planned to detonate a nuclear weapon on the moon.
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In March, 2014, Colorado sold $19 million dollars worth of Cannabis. $1.9 million went to schools and crime fell by 10%.
6
According to a 2014 study, 1 in 10 Americans think HTML is a sexually-transmitted disease.
8
The United States has paved enough roads to circle the Earth over 150 times.
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According to some estimates, Americans are sitting on $30 billion worth of unredeemed gift cards.
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Colorado switched mile marker "420" to "419.99" to stop people from stealing it.
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