He is also a senior researcher in Northeastern's Environmental Justice Research Collaborative and its Nanotechnology and Society Research Group. Ronald Sandler is author of Character and Environment: A Virtue-oriented Approach to Environmental Ethics (2007) and Nanotechnology: The Social and Ethical Issues (2009). He is co-editor of Environmental Virtue Ethics (with Philip Cafaro, 2005) and of Environmental Justice and Environmentalism: The Social Justice Challenge to the Environmental Movement (with Phaedra C. Pezzullo, 2007).