"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...

"Carefully leveled text and vibrant photographs introduce young readers to the physics principles responsible for a trampoline's behavior. Includes infographics, an experiment, glossary, and index."--

A ball drops to the ground. Leaves fall from a tree. Gravity is at work all around you. But what exactly is gravity? And how does it affect different objects? Read this book to find out! Learn all about matter, energy, and forces in the Exploring Physical Science series part of the Lightning Bolt Books collection. With high-energy designs, exciting photos, and fun text, Lightning Bolt Books bring nonfiction topics to life!

How did ancient people manage to find light sources? How do we know about light-based theories such as prisms? This fascinating book looks at the historical controversies that surround the discovery and theories of light and tells the stories of the scientists who worked on them. It also examines how the different theories based on light were arrived at, how they were tested, and what impact these theories and discoveries have had on our understanding...

Why does the rain fall? Why do rivers flow to the sea? The scientific theory of gravity answers these and many more questions we may have about this invisible force. This fascinating book looks at the historical controversies that surround the theory of gravity and tells the stories of the scientists who worked on the theory. It also examines how the theory of gravity was arrived at, how it was tested, and what impact the theory has had on our understanding...

#1 NEW YORK TIMES BESTSELLER
A landmark volume in science writing by one of the great minds of our time, Stephen Hawking’s book explores such profound questions as: How did the universe begin—and what made its start possible? Does time always flow forward? Is the universe unending—or are there boundaries? Are there other dimensions in space? What will happen when it all ends?
Told in language we all...

A New York Times Bestseller

Explainer-in-Chief David Macaulay updates the worldwide bestseller The Way Things Work to capture the latest developments in the technology that most impacts our lives. Famously packed with information on the inner workings of everything from windmills to Wi-Fi, this extraordinary and humorous book both guides readers through the fundamental principles of machines, and shows how the developments

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This sequel to Carl Sagan's blockbuster continues the electrifying journey through space and time, connecting with worlds billions of miles away and envisioning a future of science tempered with wisdom. Based on National Geographic's internationally-renowned television series, this groundbreaking and visually stunning book explores how science and civilization grew up together. From the emergence of life at deep-sea vents to solar-powered starships...

"Two children go ice skating, fall through thin ice, and once they are safely home, they learn more about how matter changes state from solid to liquid to gas"--

"Carefully leveled text and vibrant photographs introduce early readers the science and engineering behind the Panama Canal. Includes infographics, an activity, glossary, and index"--