• Extensive literature survey (2001-2023) in algal management based on empirical approach in the body of knowledge • A comprehensive overview with critical analysis of algal management, for water treatment, biodiesel production, and food production, while dealing with climate change • Providing insights about challenges, research direction, outlook, and perspectives of algal management in Industry 4.0 era This book has an advantage that each chapter will be written by experts around the world working in their respective fields. As a result, this volume presents a balanced picture across the whole spectrum of algae. Furthermore, the authors are from both the developing and developed countries thus giving a worldwide perspective of looming climatic problems.