Mary Kay Carson 
Far-Out Guide to Earth [PDF ebook] 

Earth is the only planet in our solar system that is suitable for life. It has liquid water, oxygen, and enough gravity to hold its own atmosphere, but do your readers know that Earth is always changing? Scientists have used spacecraft and satellites to learn more about our planet. They can better predict natural disasters like hurricanes, and monitor volcano eruptions and climate changes. Readers will learn lots of far-out facts about our home planet.