In this study, Clare Palmer challenges the popular conception that process thinking offers an unambiguously positive contribution to the philosophical debate on environmental ethics. She critically examines the approach to ethics which may be derived from the work of process thinkers such as A. N. Whitehead and Charles Hartshorne, pointing out questions about justice and respect for individual integrity which are raised. With these questions in mind, she compares process ethics to a variety of other forms of environmental ethics, as well as deep ecology. This comparative study reveals a number of difficulties associated with process thinking about the environment. Although some reformulations of process philosophy in the light of these difficulties are offered, the author suggests that a question mark should remain over the contribution which process philosophy can make to environmental ethics.