Provides answers to "what would happen if" scenarios, including what would happen if someone got sucked into a black hole, humans could fly, and dinosaurs still existed.

A penetrating take on how our planet would respond without the relentless pressure of the human presence

This easy-to-use center has suggestions for ways to differentiate implementation or instruction to meet the needs of all students.This resource was created to align with the CCSS and supports developmentally appropriate standards-based instruction.

From the creator of the wildly popular webcomic xkcd, hilarious and informative answers to important questions you probably never thought to ask Millions of people visit xkcd.com each week to read Randall Munroe's iconic webcomic. His stick-figure drawings about science, technology, language, and love have an enormous, dedicated following, as do his deeply researched answers to his fans' strangest questions. The queries he receives range from merely odd to downright diabolical: - What if I took a swim in a spent-nuclear-fuel pool? - Could you build a jetpack using downward-firing machine guns? - What if a Richter 15 earthquake hit New York City? - Are fire tornadoes possible? His responses are masterpieces of clarity and wit, gleefully and accurately explaining everything from the relativistic effects of a baseball pitched at near the speed of light to the many horrible ways you could die while building a periodic table out of all the actual elements. The book features new and never-before-answered questions, along with the most popular answers from the xkcd website. What If? is an informative feast for xkcd fans and anyone who loves to ponder the hypothetical.

Depicts fourteen situation on flaps that unfold to reveal the results.

Who invented pizza? Why do people shake hands? Why do we wear underwear? You'll find the answers to these questions and more in this new series from National Geographic Kids! Ever wonder how basketball got started? Why we have birthday cakes? And why some people use forks and some use chopsticks? Prepare to be amazed by the surprising backstories behind the things you use or do every day! From familiar foods to common clothing items to bizarre beauty regimens, this book covers all your burning questions: Who thought of that? Where did that come from? Why is that a thing? Presented in a bold, colorful design, with stunning photos, and jam-packed with awesome facts, this book will have you totally riveted! Once you know all this cool stuff about the origins of everyday stuff, you can "wow" your friends and family.