Kazuichi Hayakawa graduated from the Graduate School of Pharmaceutical Sciences, University of Tokyo and received PhD (1982). His research interest includes environmental pollution caused by polycyclic aromatic hydrocarbons. After retiring from Professor of Kanazawa University, he is now the Professor Emeritus. He published several books, including “Polycyclic aromatic hydrocarbons: Behavior and toxicity in East Asia” from Springer Nature, and more than 450 original research papers in international journals. He awarded from the Japan Society of Atmospheric Environment, the Japan Society of Analytical Chemistry, the Pharmaceutical Society of Japan and the Commendation for Science and Technology by the Ministry of Education, Culture, Sports, Science and Technology, Japan.
Yasunobu Aoki graduated from the Graduate School of Pharmaceutical Sciences, University of Tokyo and received PhD (1982). His research interest includes mutagenicity of environmental chemicals and their health risk assessment. He was Director of Research Center for Environmental Risk, National Institute for Environmental Studies (NIES) and Visiting Professor, University of Chiba. After retiring from NIES, he is now the Emeritus Researcher, and acts as Associate Editor of Toxicology and Applied Pharmacology. He published 150 original research papers and reviews in the fields of biochemistry and toxicology. He received the Japanese Environmental Mutagen Society Award and Environmental Protection Award from Ministry of the Environment, Japan.