A long history of theory exists to underpin our understanding of how to engage individuals and communities in more effective environmental conservation and sustainability practices. Yet rarely do we delve deeply into sociocultural theories of learning, which help demonstrate how learning and action are fundamentally intertwined in our interactions, our societies, and the world around us. To our detriment we ignore this compelling, well-grounded, and robust body of empirical and theoretical evidence. As climate change, biodiversity loss, and other pressing social-ecological issues intensify, the key to stemming and solving the greatest challenges of our time requires engaging individuals and communities. In this theoretical paper, we attend to the history and underpinnings of sociocultural theories of learning and their implications for environmental literacy, in particular, collective environmental literacy. We also discuss how such underpinnings are important to understand when pursuing carefully designed, actionable, and effective sustainability solutions.