Abstract
This doctoral thesis is a compendium of four papers that offer both management scholars and practitioners the opportunity to reflect on two key aspects. On one hand, it explores the trends in Sustainability and Circular Economy within the context of grand challenges, highlighting the adaptability of these paradigms in response to crises such as a global sanitary emergency and a war on the European continent. On the other hand, it examines the contributions of Sustainability and Circular Economy in addressing other grand challenges, emphasizing their potential to support carbon neutrality targets while also providing a supportive performance framework to enable the slowing, narrowing, and closing of resource loops while also ensuring financial performance. Hence, the thesis provides a comprehensive contribution to the field, offering novel theoretical insights, a diverse range of research methodologies, and practical frameworks for managers. Furthermore, it presents a conceptual framework and actionable strategies for enabling, implementing, and measuring sustainability and Circular Economy transitions.