This unit provides an introduction to the study of ethics and a brief overview of some
of the main branches of philosophical thought about ethics. As well as introducing the
central ideas that relate to environmental and development ethics and how these two
areas of ethical study are interrelated, this unit shows why ethics as a discipline can
provide useful tools for clarifying arguments, for understanding a range of viewpoints
in a debate, and for justifying one’s own ethical positions more clearly. Key
conceptual frameworks and some key terms are introduced and explained.