When it comes to environmental issues, it is crucial that policymakers rely on scientific evidence, while scientists become conscious of how important it is to provide relevant and comprehensive information on their work to policymakers. In our ambiguous post-truth world, this is no trivial challenge. Today’s guest, Eszter Kelemen tells us about the current state of affairs in science-policy interface and the challenges that this encumbered liaison poses not just to both sides but to environmental policy-making in general. Hosted by Alexandra Köves. Edited by Aidan Knox.