Justice issues have been prominent in the environmental debate since its beginning in the second half of the twentieth century. This is not surprising, because environmental crises highlight our conceptions of justice, challenging us to consider their adequacy as well as their implications. Does current justice theory accurately describe the issues raised by environmental threats, especially about the justice for future generations? What are the implications of perceptions of justice or injustice for responses to environmental problems, up to and including social protest? For the most part, environmental social sciences have not been at the forefront of these debates, despite some very important contributions. The goal of the present issue is, therefore, to bring together researchers in the field of environmental psychology and justice research and to provide a forum for current research in the field of environmental justice. This introduction gives a short overview of past, present, and emerging findings and questions.