National Geographic Kids Why? Children's Encyclopedia Book

• Amazon now offers National Geographic Kids trivia and quiz books for just $7.50 (list price $21.99).
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Editors' Pick: When kids ask, "Why is the sky blue?" or "Why did the dinosaurs go extinct?," flipping through this book has the answers. Featuring over a thousand questions with color illustrations, it's not a boring list of facts—it reads like a casual chat. Great for elementary school kids, and reading a few pages before bed is way more fun than scrolling through your phone.