As of 2011, gamers have collectively spent over 6 million years playing World of Warcraft. That's almost as long as the existence of the human species!
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In North Korea, you are forced to choose one of 28 government-approved haircuts.
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A man called Dean Karnazes ran 350 miles in 80 hours with no sleep, ran a marathon in the South Pole in -25 °C temperatures without snowshoes, and ran 50 marathons in 50 states in 50 days.
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If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
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