Since its first appearance, Geography: Realms, Regions, and Concepts has consistently broken new ground in the interpretation and teaching of world regional geography. For more than four decades, REGIONS, as it has come to be called, has explained the contemporary world's geographic realms and their natural environments and human dimensions. The authors look at the ways people have organized their living space, adapted to changing social as well as environmental circumstances, and continue to confront forces largely beyond their control, ranging from globalization to climate change. This book was the first to introduce an approach to Geography that meshes theoretical concepts with regional realities. The evolving regional content of the chapters in REGIONS, 18th Edition, reflects the dynamic nature of the world's geography; the changing and growing number of concepts mirror the progress of the discipline; and the ongoing introduction of new digital features reflects the instructional possibilities of new technologies.