Muhammad Ali fought legendary boxers, the war draft, and a debilitating central nervous system disorder. He also fought Superman.

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Adams? Franklin? Jefferson? Nah. The most valuable signature on the Declaration of Independence belongs to a person you probably don't know.

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Intriguing Headline of the Day: The Strange Fate of a Person Falling Into a Black Hole

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Will a big red button prevent runaway Artificial Intelligence from enslaving us all?

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The moon landing isn't the only thing under scrunity. Here are a bunch of other conspiracies about secret space missions.

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Good Question: Why are we still teaching kids cursive handwriting?