Despite the prominence of global environmental challenges, promoting publics’ engagement with issues related to environmental sustainability has proven difficult. Publics have perceived them as distant issues that do not have imminent impact requiring immediate actions. However, publics’ disengagement has in turn accelerated environmental deterioration. Applying construal level theory, this study explores factors that cause publics’ disengagement but also ways to promote information behaviors in an environmental sustainability issue. An online survey was conducted of a nationally representative sample of 507 Australians in November 2022. Using food waste as an issue that negatively affects environmental sustainability, structural equation modeling was conducted to test the effects of the dynamics of psychological distance, feasibility, and desirability on publics’ disengagement, information seeking and information forwarding. When individuals consider food waste a distant issue, they also consider it to be undesirable and infeasible to act upon, with the result that they disengage. However, this study finds that while psychological distance is negatively associated with desirability and feasibility, it is positively associated with information seeking and forwarding. We find, in particular, that desirability positively contributes to information seeking and forwarding. However, feasibility is negatively associated with information seeking and forwarding. Implications for public relations theory and practice are discussed (203 words).