From hot-air balloons to stealth aircraft that can hide from radar, machines that fly in the sky are amazing feats of technology. They're made possible by developments in engineering! In this volume, readers encounter many high-flying machines, including helicopters, drones, and even jetpacks! Detailed text describes the science behind how each machine works while clear diagrams aid readers understanding. Sidebars about the coolest in flying technology...

Machines developed for use on land change the way the world works. When tanks were first built, they changed the course of a war. Cars changed how people move-and now electric cars are doing it again! Mag-Lev trains are amazing feats of engineering that move faster than anyone 100 years ago would have thought possible! Readers of this compelling volume explore the science and engineering behind many kinds of machines that go on land, including full-color...