Text and drawings explain the workings of certain everyday items including bicycles, traffic lights, and computers.

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 a large and passionate following. Fans of xkcd ask Munroe a lot of strange questions. What if you tried to hit a baseball pitched at 90 percent the speed of light? How fast can you hit a speed bump while driving and live? If there was a robot apocalypse, how long would humanity last? In...

"Sometimes big nerdiness comes in a small package-and this little book is a tech nerd's dream! Experience tech of all kinds-from Mars rovers and space suits to retro arcade games- in this quirky, jam-packed original from National Geographic Kids"--

"How do refrigerators stay cold? How does water come out of the faucet? Answers to these questions and many more will help parents move beyond the stock answer "because" and give level-appropriate, fascinating, true answers. More than 300 photos bring a child's world to life while satisfying kids' curiosity and sense of fun. Questions in each chapter encourage interactivity, and parent tips extend the experience of the book."--

"Curious kids ask the best questions! What keeps the stars from falling from the sky? Why do metal boats float? And more importantly, why don't cars run on apple juice?! All these questions and more are found in the pages of this science Q & A book with questions from the most inquisitive of science center visitors--kids. With help from a slew of scientists, author Kira Vermond serves up the answers to more than 50 quizzical queries in a fun and engaging...

Read along as we dissect, explore, and explain how things do what they do. Complete with exciting diagrams and illustrations, accessible explanations, trivia, and fun features, How Things Work: Inside Out explains cell phones, 3D printers, lava lamps, skyscrapers, and everything in between!

"Ever wanted to take apart the microwave to see how it works? Crack open your computer and peek inside? Intrigued by how things work? So are we! That's why we're dissecting all kinds of things from rubber erasers to tractor beams! Read along as National Geographic Kids unplugs, unravels, and reveals how things do what they do,"--

"Did you know that you can dry out your wet cell phone by putting its parts in separate bowls of uncooked rice? That you can scroll through a website using only your spacebar? That if you type your airline and flight number in to Google, it tells you where your flight is, the gate, terminal, and how long until it lands? ... Pogue's tips have earned him 1.5 million followers on Twitter. And now that he writes his columns for Yahoo Tech, the audience...

Join Koko and the explorers as they take things apart and see how they work. What makes machines go? What are sound and light? How do we measure?