In Department of Environmental Science and Technology, we aim for the construction of a sustainable biological production system in which human activities and biological systems are in harmony while preserving and restoring, and understanding, the environment of the global biosphere which is made up of all the diverse ecologies. To that end, we carry out research and education, rooted in basic science, in fields such as meteorology, environmental science, and ecology, looking at global ecological systems with its complex interactions among the land, sea, and sky, and applied technology, in a field of environmental and agricultural engineering to achieve a better and more sustainable future for all. This department is made up of three courses: Sustainable Earth and Environmental Sciences, which looks at the fields of geoscience; Environment Oriented Information and System Engineering, which uses instrumentation, control and systems engineering of environmental information, with a core of information processing technology based on knowledge of bioecology, as its methods; and Irrigation, Drainage and Reclamation Engineering, which is designed for the protection of rural villages and farmland where humans are directly connected with the workings of nature as well as their sustainable use as sound, healthy places for material circulation. The details of the education and research provided by each course are as follows.