Risk science is an interdisciplinary science with a very vast scope. It covers many areas accompanying hazard, and it encompasses basic research on hazard and exposure estimation to assessment, management and communication of risks, including governmental actions and societal responses. Another feature of risk science is that it is a discipline with the aim of practical application. The author has involved in research on governmental actions to air pollutants and genetically engineered

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... in foreign countries under contract with Japanese governmental agencies. Through these works, author got to know how risk science is practically applied in the governmental actions in foreign countries. In the society with rapid technological innovations and high demands for safety, there are vast areas where risk science could play important roles. The important point would be to have the wide view and deep insight into the practical application.