Since the 1970s, environmental ethics has become important part of philosophical studies in the United States and elsewhere. However, more recently, as scholars, policymakers, industries and the public have come to recognize the interdisciplinary nature of today's environmental problems, the past philosophical concentration of environmental ethics faces some fundamental questions: Does environmental ethics really apply to "real" situations? As environmental problems have become more and more transnational or transregional as well as multicultural in nature, does the Western philosophy- or Euro-American-oriented environmental ethics have capacity to fathom the depth of today's complicated environmental problems? More importantly, do we as "global citizens" need to develop internationally applicable principles in order to solve environmental problems? If so, to what extent do we incorporate cultural and regional differences? Our applied environmental ethics study group aims to answer these questions.