NREM Professor Emeritus Chennat Gopalakrishnan is guest editor of a special issue of the Journal of Natural Resources Policy focused on “Institutional Entropy: Causes, Consequences, and Corrective Measures.” The journal is issuing a call for papers that clarify and illuminate all aspects of institutional entropy, examining in detail its causes and consequences and suggesting possible solutions. Policy-rich, cross-disciplinary, and transnational papers, including case studies, are welcome, as are those using historical surveys, institutional analysis, econometric investigations, and empirical reviews. Recent years have witnessed a significant increase in the decline of natural resources (e.g., water, energy, forestry, minerals, fisheries) in the US and globally, due to the corrosive impact of institutional entropy. Entropy penetrates, corrodes, and compromises the efficiency and effectiveness of institutions and renders them dysfunctional over time. Institutions that fail to keep up with social, economic, technological, environmental, political, and cultural changes that inevitably accompany the passage of time render themselves severely vulnerable to entropy. Depending on the intensity of entropy, several of the key attributes of institutional efficiency and effectiveness are compromised and institutional sustainability is imperiled with the passage of time. Papers should be prepared in accordance with the guidelines posted here under “Instructions for Authors.” Inquiries may be directed to the editor-in-chief at firstname.lastname@example.org.