We are pleased to publish the special issue of IRIDeS Research, “Collective Intelligence on Disaster Science 2025.”

The research and practices of IRIDeS are to gain the knowledge and implications derived from disasters and exploit them towards resilient society. The goal of disaster science and its practices are to prevent and reduce exposure to hazards and vulnerability to disasters, strengthen preparedness for response and recovery, and thus resilience, through the implementation of integrated and comprehensive economic, structural, social, cultural, educational, environmental, and technological measures to prevent new disaster risks and mitigation of existing risks.

Accumulation of scientific evidence and knowledge produced in diverse research of IRIDeS researchers will lead an emergence of “collective intelligence” as consequences of collaboration and collective efforts of many individuals and their teams. This special issue consists of five papers. I hope these new outcomes will promote the development of resilient and sustainable society against all hazards.

As an editor of this issue, I would like to express our deep gratitude for the insightful comments and suggestions made by the reviewers and the members of the editorial committee.