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Who Invented the Hat?
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Who Invented the Cowboy Hat?
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What Is a Hat Trick?
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How Do Fangs Work?
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Is Every Derby a Race?
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What Is a Hurricane?
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What Is a Bowler?
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What Causes Freckles?
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Why Do Bats Sleep Upside Down?
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Why Do Graduates Wear Funny Hats?
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Have You Ever Worn a Sombrero?
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What Is the Birthday Paradox?
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Why Do Some Jewish Men and Women Wear Yarmulkes or Kippot?
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What Is Static Electricity?
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Why Do Some Years Leap Ahead?
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Who Wrote the Pledge of Allegiance?
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Why Are There Seven Days in a Week?
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How Many Steps Does Chichén Itzá Have?
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What Are the New Seven Wonders of the World?
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Who Is Lionel Messi?