During the Cold War, the US had planned to detonate a nuclear weapon on the moon.
25
The United States consumes 25% of all the world's energy.
51
There are six times as many people of Irish descent living in America than in Ireland.
15
The United States does not have an official language.
88
The US national public health institute, Centers for Disease Control and Prevention, has an actual plan in case of zombie invasion.
29