Emilio Benfenati is head of the Laboratory of Environmental Chemistry and Toxicology at the Mario Negri Institute, Milan, Italy, and has been a researcher at Stanford University, USA. During that period, he also performed collaborative research at Berkeley University, USA. He has gained considerable experience in the management of international programs, coordinating 22 European projects and participating in 34 others. Many of them are on toxicity and environmental modeling. He is/has been a Member of the Working Groups of the OECD, EFSA; SCCS, EMA; and the National Commission for the Evaluation of Pesticides, Italian Ministry of Health. His research activities include computer chemistry, QSAR, toxicity prediction, risk assessment, and many others. He is the author or co-author of 500 + papers in international journals and books.