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How Does a Sawfish Use Its Saw?
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How Much Can the Temperature Swing in a Single Day?
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What Is a Kaleidoscope?
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Why Are Pavlov’s Dogs Famous?
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How Do Bees Make Honey?
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What Is a Fossa?
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How Simple is Occam’s Razor?
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What is Smallpox?
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How Do You Jump On the Bandwagon?
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Why Do Giraffes Have Long Necks?
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Who Was Nellie Bly?
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Can One Bad Apple Spoil the Bunch?
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When Was the Black Death?
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Is There Such a Thing as Love at First Sight?
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Why is Greenland Icy and Iceland Green?
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Who Was Muhammad?
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What Can You Do with Duct Tape?
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What Is Line Dancing?
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How Did Helicoprions Use Their Teeth?
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How Did the Teddy Bear Get Its Name?