The case study delves into the complex issue of CO2 footprint from three distinct viewpoints: sustainability, legislative, and managerial. Each perspective offers unique insights into the challenges and opportunities of mitigating greenhouse gas emissions using scope 1, 2, and 3 data. From a sustainability viewpoint, students are encouraged to explore the concept of CO2 footprint within the broader context of ESG considerations. Key questions delve into understanding sustainability frameworks, assessing the impact of CO2 emissions on ecosystems and communities, and exploring strategies for carbon footprint reduction aligned with sustainability goals. From the legislative perspective, students examine the regulatory landscape governing CO2 emissions. Students learn how legal frameworks shape corporate behavior by studying global sustainability goals such as the UN Sustainable Development Goals (SDGs), the Global Reporting Initiative (GRI), and national legislation. Discussion questions focus on analyzing the effectiveness of existing regulations, identifying gaps, and proposing regulatory strategies to incentivize carbon reduction. The managerial perspective emphasizes decision-making and goal-setting within organizations. Students explore how managers can leverage data on CO2 footprint to set SMART (Specific, Measurable, Achievable, Relevant, Time-bound) goals for departments or individuals. This involves understanding the role of carbon accounting, evaluating trade-offs in sustainability initiatives, and exploring best practices in integrating sustainability into organizational strategy. The case encourages critical thinking and data analysis, allowing educators to pose additional questions based on student interests and course objectives. The rich dataset allows for extensive exploration beyond the core questions, facilitating interdisciplinary learning across various courses. Ultimately, the case is a versatile teaching tool that can be applied to courses focusing on sustainability, environmental studies, business ethics, managerial decision-making, and public policy. It equips students with the knowledge and skills to navigate the multifaceted challenges of reducing their CO2 footprint while advancing sustainable practices within organizations and society.