Global-Scale Climate Action Research: Insights from the International Climate Psychology Collaboration (ICPC)

Tackling the climate crisis requires large-scale, interdisciplinary collaboration to identify and test effective solutions. In this talk, I will present the findings from the International Climate Psychology Collaboration (ICPC), a global megastudy involving 258 collaborators that tested interventions designed to promote climate-friendly attitudes and behaviours in over 59,000 participants from 63 countries. As one of the largest experiments in climate psychology to date, this initiative provides unique and valuable insights into what works—and what does not—when it comes to fostering climate action on a global scale. Beyond the findings themselves, the ICPC serves as a case study on the challenges and opportunities of massive, open, and collaborative research. Managing such extensive international projects requires careful coordination, data-sharing, methodological standardisation, and interdisciplinary collaboration. These efforts underscore the importance of research infrastructure, data accessibility, and transparent workflows in advancing global-scale behavioural science. Given the increasing popularity of such large-scale collaborative approaches, there is a growing need for efficient data-sharing systems, well-structured data management plans, and streamlined archival processes to ensure that large-scale collaborations remain accessible, reproducible, and impactful over the long term. In this talk, I will highlight key challenges in conducting international open science projects, reflect on lessons learned from ICPC, and invite discussions on how research libraries and digital infrastructures might better support collaborative sustainability research in the future.