The primary aim of our education and research is to analyze and understand, at both the global and the regional scales, the mechanism and the dynamics of the changes in the global climate and ecosystem, as well as the mutual interrelationships among them. GIS, field observation and satellite data are intensively utilized. The fingerprints of these changes are observed through such phenomena as extreme weathers (El Niño, storms), drought, air and water pollution related eco-climatic problems (global warming, ozone depletion, acid rains), and changes in the land covers (tropical rainforests destruction, desertification). We especially emphasize on the role and influence of the human as part of the global ecosystem. This makes it possible to obtain a deep understanding of his actions, and to devise and implement ways and means for sustainable solution to the problems.