How do you make something bigger and heavier than a human float? Science! From the earliest ships carved out of wood, to giant cruise ships that are like floating cities, there's a lot to… More →

Smash! A massive bulldozer flattens a building! Learn more about how bulldozers move over any surface, and find out what they are used for. Additional features to aid comprehension include a… More →

Your brother has been missing in the Arizona mountains for weeks. You know that he was there to search for the Lost Dutchman's Gold Mine. Stories say that the lost mine holds a fortune that's More →

When Spanish gold is found on the North Carolina coast, your mind begins to race. Through your studies, you know that the infamous pirate Blackbeard was active in that area in the 1700s.… More →

Engineering professionals design and build everything from roads and rollercoasters to skyscrapers and spacecraft. They also help solve environmental problems--such as pollution and… More →

Buzz! A worker in a cherry picker cuts a power line high above the trees! Learn more about how cherry pickers work and what they are used for. Additional features to aid comprehension include More →

Introduces readers to what coal power is, how it is used today and how it might be used in the future, and the benefits and drawbacks of this energy source. Additional features include a… More →

Each year thousands of students of all ages enter robot competitions through their schools or other organizations. They can compete alone or as part of a team in competitions like Lunabotics… More →

Whirr! A concrete mixer's drum spins round and round! Learn more about why these big machines never stop moving. Additional features to aid comprehension include a table of contents,… More →

Clank! A crane drops a steel beam on top of a skyscraper! Find out more about wrecking balls, heavy loads, and other things a crane might lift. Additional features to aid comprehension… More →