This edited volume collates over a decade of Greg William Misiaszek’s work on ecopedagogy, with a new focus on insights and possibilities for global citizenship education (GCE) scholarship. Rooted in critical theories and originating from Paulo Freire’s popular education models of Latin America, ecopedagogy is centered on understanding the struggles of, and the connections between, human acts of environmental violence, social injustices, and Nature’s unsustainability. The book brings together diverse understandings of ecopedagogy, introduces key concepts of teaching for local-to-planetary citizenship, and explains how both are essential for socio-environmental justice and planetary sustainability. Grouped into three parts, it includes new, detailed introductions, with crucial GCE threads explored throughout the chapters. This includes discussions of how non-critical teaching for (environmentally) sustainable development that opposes critical GCE’s essence instills anti-environmentalism, rather than countering it. As a comprehensive and fresh curation of Misiaszek’s work on timely and critical topics, it will appeal to academic scholars, educational researchers, teachers, and social/environmental movement leaders/participants, among others, who have interests in GCE, environmental sustainability, sustainable development, environmental teaching, and social-environmental justice.