Nanthi Bolan served as the Chair in Environmental Science and Dean of Graduate Studies at the University of South Australia. His teaching and research interests include agronomic value of manures, fertilisers and soil amendments, soil acidification, nutrient cycling, pollutant interactions in soils, and soil remediation.Nanthi is a Fellow of American Soil Science Society, American Society of Agronomy and New Zealand Soil Science Society, and was awarded the Communicator of the Year award by the New Zealand Institute of Agricultural Sciences. He has supervised a number of postgraduate students and was awarded the Massey University Research Medal for excellence in supervision. He has published more than 150 papers and is currently serving as the Associate Editor of Critical Reviews in Environmental Science and Technology. Mary Beth Kirkham is a graduate of Wellesley College (B.A.), the University of Wisconsin, Madison (M.S. and Ph.D.), and is professor in the Department of Agronomy at Kansas State University, Manhattan. Kirkham is the author or co-author of over 250 contributions to scientific journals and is on the editorial boards of Soil Science, Soil Research, and Geoderma. Kirkham is a Fellow of the American Society of Agronomy, the Soil Science Society of America, the Crop Science Society of America, and the American Association for the Advancement of Science, and is on the Executive Committee of the International Union of Soil Science. Dr. Yong Sik Ok is a Full Professor in the Division of Environmental Science and Ecological Engineering, Korea University, Seoul, Korea, where he also serves as Director of the Korea Biochar Research Center. His positions include Adjunct Professor at the University of Wuppertal, Germany, Adjunct Professor at the University of Southern Queensland, Australia, Guest Professor at China Jiliang University, China and Guest Professor at Ghent University Global Campus, Ghent University, Belgium. Prof. Ok holds a B.S., a M.Sc., and a Ph.D. from the Division of Environmental Science and Ecological Engineering, Korea University, Seoul. He was a Postdoctoral Fellow at the Department of Renewable Resources, University of Alberta and held Visiting Professorships in the Department of Renewable Resources (University of Alberta), in the Faculty of Bioscience Engineering (Ghent University), in the Department of Civil and Environmental Engineering (Hong Kong Polytechnic University) and in the Department of Chemical and Biomolecular Engineering (National University of Singapore). Prof. Ok's research interests include waste management, bioavailability of emerging contaminants, and bioenergy and value-added products such as biochar. He also has experience in fundamental soil science and remediation of various contaminants in soils and sediments. Together with graduate students and colleagues, Prof. Ok has published over 400 research papers.
