Environmental learning, or how individuals make sense and meaning about nature, the environment, ecology, and environmental issues, is best understood as lifelong, life-wide, and life-deep (Banks and others, 2007). Lifelong learning refers to acquisition of skills, competencies, attitudes, and knowledge over time; life-wide is learning across social settings and activities; and life-deep includes the context and culture in which an individual learns beliefs, ideologies, and values. In this chapter, the authors point out that institutions focused on environmental learning need to channel a portion of their effort into a better understanding of how people learn. They suggest that understanding the contextual differences of learning across lifespan and within different settings is important in order to enhance adult learning opportunities in environmental settings. Creating a consistent base of meaning from which adult educators and researchers can talk about adult learning and the environment is important, and it is the hope that this chapter provides a base that could lead to some of that meaning.