This book traces the history and evolution of the Green Party movement, exploring its foundational principles, its engagement with global political systems, and its continuous struggle to reconcile radical environmental ideals with the practicalities of mainstream political engagement. Beginning with the roots of the Green Party in the social movements of the 1960s and 1970s, the narrative moves through pivotal moments in Green Party history, from the rise of eco-socialism and green economics to their increasing involvement in national and international politics. The book examines the Green Party's ideological development, its efforts to engage with technological innovation for sustainable solutions, and its role in global governance, particularly through its advocacy for climate justice and systemic economic transformation. Throughout, it addresses key debates within the Green Party, such as the balance between activism and electoral politics, the challenges of coalition-building, and the tension between technological progress and ecological principles. By focusing on the interplay of environmental justice, social equity, and global cooperation, the book provides an in-depth analysis of the Green Party's ongoing role in shaping the political discourse surrounding sustainability, climate action, and the future of global governance. The future of Green politics, as the book concludes, lies in its ability to continue to adapt to the changing global landscape while staying committed to its foundational vision of a more equitable, sustainable, and just world.