Pardeep Singh is Professor and Head at the School of Advanced Chemical Sciences, Shoolini University, Solan, India. He is specialized in physical chemistry and heads a lab of research scholars who work on photocatalysis with the aim of generating new knowledge on graphene-based photocatalytic materials and processes to develop novel de-pollution treatments with enhanced efficiency and pilot-scale applicability. He is also exploring the generation of bio-waste material-based activated carbon for adsorption-based removal of aqueous phase pollutants. Dr. Ajay Kumar is currently working as an assistant professor at Amity Institute of Biotechnology, Amity University, Noida, India. Dr. Kumar recently completed his tenure as a visiting scientist from Agriculture Research Organization, Volcani Center, Israel. He has published more than 175 research, review articles, and book chapters in international and national journals. He serves as an associate editor for Frontiers in Microbiology and as guest editor for various journals such as Plants, Microorganisms, and Sustainability. Dr. Kumar has also edited more than 32 books with the leading publishers such as Elsevier, Springer, and Wiley. Dr. Kumar’s research experience is in the field of plant–microbe interactions, postharvest management, cyanobacterial biology, and so on. Dr. Anwesha Borthakur is a research fellow at the Centre for Studies in Science Policy, Jawaharlal Nehru University, New Delhi. She has an M.Phil and PhD in Science Policy Studies. The area of her both M.Phil and PhD studies was waste management and policy implications in India. She has published more than 30 papers/chapters in international peer-reviewed journals and books. Presently working as a Post Doctoral Fellow.