The US national public health institute, Centers for Disease Control and Prevention, has an actual plan in case of zombie invasion.
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In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
In 1700s, the deer skin was a common medium of exchange between the trading settlers and the native Red Indians in America. This is how a buck became a slang for a dollar.
28
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
Alaska is the only state that can be typed on one row of keys on a QWERTY keyboard.
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