Earlier this year, in the August 2013 edition of Journal of Research on Science Teaching (JRST), we featured a special issue devoted to discipline-centered postsecondary science education research. We invite research papers that focus on studies in which deep, disciplinary understanding of science provides the foundation for the work, and where student learning outcomes are featured. Manuscripts might focus on instructional design, student leadership, learning technologies, experiential activities, interdisciplinary projects, and so on.