 Environmental ethics is the discipline in philosophy that studies the moral relationship of human beings to, and also the value and moral status of, the environment and its non-human contents. This entry covers: (1) the challenge of environmental ethics to the anthropocentrism (i.e., human-centeredness) embedded in traditional western ethical thinking; (2) the development of the discipline from the 1960s and 1970s; (3) the connection of deep ecology, feminist environmental ethics, animism and social ecology to politics; (4) the attempt to apply traditional ethical theories, including consequentialism, deontology, and virtue ethics, to support contemporary environmental concerns; (5) the broader concerns of some thinkers with wilderness, the built environment and the politics of poverty; and (6) the ethics of sustainability and climate change.