This visually stunning guide gives an up-close look at some of the more elusive objects in space. Definitions of better-known objects, such as comets, as well as lesser-known objects, such as centaurs and trojans, give a basic understanding of space objects and the history of how they were discovered. It also covers the scientists who theorized about their existence and the later scientists who actually discovered them. Readers will also get a look...

This colorful, dynamic volume explains to upper-elementary-level readers the exciting science behind the sun and all its fantastic phenomena. The narrative covers the sun's role from ancient mythology and astronomy through modern discoveries before going in-depth and inside the sun's layers, breaking down the chemistry and physics behind the sun's composition and atmosphere. Thrilling events such as solar flares, eclipses, and star formation are explained...

Most of our energy has come from oil, gas, and coal. Find out how we can heat and light our buildings, travel, and power our computers and devices without harming the planet in this resourceful title. Extracting resources damages the environment, and burning them contributes to global warming, harms our health, and pollutes the air and water. Case studies show how scientists are investigating renewable energy sources, such as wind and solar power,...

What is it like to live in or visit Brazil? What makes Brazil's culture unique? Explore the geography, traditions, and daily lives of Brazilians.

Your readers will discover different tasks robots handle in the world and how robots are put together. This book explores how robots ingest data from their surroundings, and how they function. Budding engineers will also discover some of the intricacies of artificial intelligence, including what it takes to make a machine that can pass as a human. Compelling infographics and simple language make complex mechanics easier to understand. There's a lot...

What is it like to live in or visit Portugal? What makes Portugal's culture unique? Explore the geography, traditions, and daily lives of Portuguese people.

World War II was filled with deadly battles. And people caught in the crossfire were in just as much danger as the soldiers. Learn about the war's determined survivors and what it took for them to escape.

After rock hunting near a river all day, you bring home a bucket filled with rocks. You break one open. Inside, gold cube-shaped crystals shine. You've found pyrite! It will be a perfect addition to your growing rock collection. Find out how fool's gold, or pyrite, forms, where it is found, and about some of the most amazing pyrite discoveries. Then learn how you can find and collect this gleaming gold mineral too!

Apps are a familiar part of many kids' lives, but do they know what it takes to design and create them? Readers are introduced to many of the different career paths within the world of app design-from the development stage to the backend work. As they explore the ins and outs of each job, they deepen their understanding of how STEM concepts are applied in the professional world. Fact boxes, illustrations, and photographs are included as part of the...

Some of the world's most interesting animals - lions, cheetahs, and bison - live on grasslands. These fragile ecosystems are often taken for granted and have been nearly wiped out in many places around the world. This colorful book introduces readers to this fascinating but constantly threatened landscape.