Abstract

Climate change has been called “the biggest global health threat of the 21st century.” This chapter outlines some central ethical dimensions of the challenge. It begins by reviewing a few of the major health impacts expected from climate change. It then summarizes some key issues surrounding the ethical importance of health, and of injustices connected to global health inequalities. Finally, the chapter explores a recent concept – planetary health – that aims to environmentalize public health in order to confront climate change more successfully. The basic conclusion is that issues of ethics and justice are central to the public health challenge moving forward. One aspect of this challenge is the need for a more philosophically robust account of the ethics of public health in general, perhaps pursued through a deeper exploration and development of the concept of planetary health.