The environment is a vital element required for human existence and development. However, due to human actions, environmental problems including global warming, climate change, pollution, natural resources depletion and hazardous waste disposal occur, and their impacts are aggravated by human-related activities and decisions. To manage the problems, the most relevant approach or technique is required to be selected and applied, based on results from environmental assessment and monitoring at the local, national and international levels. The impacts of the environmental problems are more serious in developing countries like Cambodia compared to developed countries due to limitations of knowledge and human capacity as well as lack of financial availability to manage them. International efforts to advance environmental conservation in developing countries have been carried out and contributed to increasing the quality of life for people and societies in the countries. However, it is now recognized that the capacity of human resources and academic institutes needs to be developed and strengthened for environmental management and conservation by the countries themselves. The Department of Environmental Engineering provides an Honor Bachelor Program designed for exceptionally motivated and high-achieving students who want thorough, in-depth education about environmental challenges and solutions. Through the top-notch program, the Department with support from the Korea International Cooperation Agency (KOICA) and the Gwangju Institute of Science and Technology (GIST), based in the Republic of Korea, educates students to understand interactions between human actions and environmental effects. Moreover, the Department develops the capability of students to identify and address environmental challenges by adopting widely used or state-of-the-art approaches and technologies.