Geologists study the materials and processes that make Earth! These important scientists find new ways to use minerals, study climate change, and more. In this low-level title, leveled text and on-the-job photos explore the work of geologists in the lab and in the field. Readers will learn what geologists do, what tools they use, and how to become one. Special features profile a notable geologist, show how geologists use STEM, and outline how to become a geologist!