Co-production has become a cornerstone of research within the sustainability sciences, motivating collaborations of diverse actors to conduct research in the service of societal and policy change. This review examines theoretical and empirical literature from sustainability science, public administration, and science and technology studies (STS) with the intention of advancing the theory and practice of co-production within sustainability science. We argue that co-production must go beyond stakeholder engagement by scientists to the more deliberate design of societal transitions. Co-production can contribute to such transitions by shifting the institutional arrangements that govern relationships between knowledge and power, science and society, and state and citizens. We highlight critical weaknesses in conceptualizations of co-production within sustainability sciences with respect to power, politics, and governance. We offer suggestions for how this can be rectified through deeper engagement with public administration and STS to offer a broad vision for enhancing the use, design, and practice of a more reflexive co-production in sustainability science.

Cultivating a more dynamic relationship between science and policy is essential for responding to complex social challenges such as sustainability. One approach to doing so is to “span the boundaries” between science and decision making and create a more comprehensive and inclusive knowledge exchange process. The exact definition and role of boundary spanning, however, can be nebulous. Indeed, boundary spanning often gets conflated and confused with other approaches to connecting science and policy, such as science communication, applied science, and advocacy, which can hinder progress in the field of boundary spanning. To help overcome this, in this perspective, we present the outcomes from a recent workshop of boundary-spanning practitioners gathered to (1) articulate a definition of what it means to work at this interface (“boundary spanning”) and the types of activities it encompasses; (2) present a value proposition of these efforts to build better relationships between science and policy; and (3) identify opportunities to more effectively mainstream boundary-spanning activities. Drawing on our collective experiences, we suggest that boundary spanning has the potential to increase the efficiency by which useful research is produced, foster the capacity to absorb new evidence and perspectives into sustainability decision-making, enhance research relevance for societal challenges, and open new policy windows. We provide examples from our work that illustrate this potential. By offering these propositions for the value of boundary spanning, we hope to encourage a more robust discussion of how to achieve evidence-informed decision-making for sustainability.