During the Cold War, the US had planned to detonate a nuclear weapon on the moon.
25
According to some estimates, Americans are sitting on $30 billion worth of unredeemed gift cards.
223
The US national public health institute, Centers for Disease Control and Prevention, has an actual plan in case of zombie invasion.
29
Colorado switched mile marker "420" to "419.99" to stop people from stealing it.
37
In the U.S. the typical school year is 180 days long. In China, the typical school year is 251 days.
7
Harvard earns enough money from interest on its endowment that it could offer free tuition to every student and still profit.
13
