The Statue of Liberty is made out of copper. When originally built, it looked like a shiny new penny!
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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.
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The United States has paved enough roads to circle the Earth over 150 times.
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In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
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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.
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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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On average, someone in the US suffers a stroke every 40 seconds; someone dies every 3 minutes from stroke.
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