This chapter explores net zero policies and aspirations, emphasizing the evaluation of best practices for adequate growth. Net zero refers to the state where greenhouse gas emissions, after removal, equal those produced, preventing the onset of global climate change. Achieving net zero aligns with the Paris Agreement goal of limiting global temperature rise to 1.5 °C above pre-industrial levels. The discussion highlights the challenges and opportunities for affluent and developing nations. Developed nations often lead in implementing net zero policies, while underdeveloped countries face unique vulnerabilities to climate change impacts. Despite their limited current emissions, emerging nations exhibit significant potential for future greenhouse gas emissions due to urbanization and development, complicating their net zero pathways. The chapter stresses integrating developing nations into global initiatives, as these countries require substantial financial support and access to advanced technology. Net zero efforts intersect with sustainability concepts but face horizontal political challenges, as achieving net zero is more complex for developing nations than for affluent ones. The chapter evaluates global initiatives and the implications of net zero policies for short- and long-term sustainable growth, and underscores the necessity for equitable collaborations to ensure developing nations receive the resources to contribute effectively to climate goals.