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How Did the Pretzel Get Its Shape?
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What Is AIDS?
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Who Was Arthur Ashe?
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Where Is the Milky Way?
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How Many Stars Are In the Universe?
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Why Do Some People Need Glasses?
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Who Is the Fastest Swimmer?
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What is Smallpox?
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What Is Buckminsterfullerene?
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What is CRISPR?
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What Are Lymph Nodes?
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How Does Contact Tracing Work?
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What is the Grito de Dolores?
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Who Was Mother Teresa?
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How Are Wax Figures Made?
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What Is a Dust Bunny?
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What Makes Bloodhounds Good Detectives?
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How Much Do You Weigh On the Moon?
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How Tall Is the Eiffel Tower?
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How Does a Cactus Live Without Water?