"In this book, Bill Hammack, better known as The Engineer Guy, takes us on a whirlwind tour of how humans built the world we know today. From the grand stone arches of medieval cathedrals to the mundane modern soda can, Hammack explains the golden rule of thumb that underlies every new building technique, every technological advancement, and every creative solution that leads us one step closer to a better, more functional world. Perfect for readers...

Once again, the Earth is under attack. An alien species is poised for a final assault. The survival of humanity depends on a military genius who can defeat the aliens. But who? Ender Wiggin is brilliant, ruthless, and cunning, a tactical and strategic master, and a child. Recruited for military training by the world government, Ender's childhood ends the moment he enters his new home: Battle School. How will Ender perform in real combat conditions?...

"How Technology Works demystifies the machinery that keeps the modern world going, from simple objects such as zip fasteners and can openers to the latest, most sophisticated devices of the information age, including smartwatches, personal digital assistants, and driverless cars. It includes inventions that have changed the course of history, like the internal combustion engine, as well as technologies that might hold the key to our future survival,...

The six children have escaped horrifying government experiments, a childhood in captivity and frightening brush with death. Living out in the world for the first time, they yearn to be reunited with Kit and Frannie, the couple who saved their lives. And Max, the leader of the flock, is seized by and overpowering fear that the kids are about to face a danger greater than any they've ever known. All that the children want is to return to the one place...

Enter the brave new world of social robotics, where robots are built specifically to communicate with humans and other autonomous physical agents. With the help of the robot Baxter, discover how simple signals like spoken words, expressions, and body language can create a dynamic user interface between human and robot..

Compare the three main methods of dealing with the 700,000 tons of solid waste generated every day in the U.S.: landfill, incineration, and recycling. Explore the distinction between recycling, which is practical with many metals, and down-cycling, which is the fate of most plastics..

Finish your launch preparations by building a theodolite to measure the altitude of the rocket's trajectory, building a launch pad, packing the parachute, choosing a safe launch site, setting up the site, and coordinating the activities of the mission control team. Once all systems are go, conduct the countdown and press the firing button...

Ride the rails to learn why rail transportation continues to thrive, two centuries after the modern railroad was introduced. Trace the origin of the standard rail gauge used in the U.S., probe the forces a locomotive must overcome to get rolling and then stop, and chart the rise of a revolutionary way of handling cargo: the intermodal container..

Now that your house is framed, it needs a building envelope that can shed rainwater and melting snow, and also keep precipitation from entering through the foundation. Learn about the five integrated layers of protection: shingles and cladding, drainage plane, insulation, vapor barrier, and drywall..

Put together your model rocket, paying special attention to the engine mount and fins, then giving the completed vehicle a drag-reducing finish. Apply the science of aerodynamics to calculate the required diameter of the parachute. Then check the rocket's stability by determining its center of gravity and center of pressure locations. Your creation is now ready to fly.