This course introduces the study of ethics and a brief overview of some of the main branches of philosophical thought about ethics. Besides teaching the central ideas that relate to environmental, socio-cultural, and development ethics and how these areas of ethical study are interrelated, this course also aims to enlighten the students why ethics as a discipline can provide valuable tools for clarifying arguments, understanding a range of viewpoints in a debate, and justifying one’s ethical positions. Key conceptual frameworks and some vital ethical terms are introduced and explained. In this course, questioning and discovery are considered integral parts of teaching-learning. This course aims to introduce some key terms, ideas, principles, and frameworks relating to the study of ethics and, more importantly, to use them in their day-to-day lives either directly or indirectly while dealing with various socio-cultural, environmental, or developmental dilemmas. In this course, students are expected to take responsibility for learning and take the initiative to gather information, make decisions, express ideas in writing, and perhaps revise those ideas, rather than simply listen to lectures.