This Climate Classroom Lesson will explore the intersection of Human Behavior and Climate Action. The lesson will provide an introductory perspective on the interdisciplinary behavioral sciences as they relate to supporting effective and collective climate action. We present climate action as a collective action problem and explore ways to address collective action problems. We present Nobel laureate Elinor Ostrom’s Core Design Principles as a framework of social conditions that foster cooperation and discuss the use of the framework for effective climate action.