Dr. Blake Ratner is Executive Director, Collaborating for Resilience—a cross-regional, non-profit initiative working to address environmental resource competition and strengthen governance and livelihood resilience in interconnected resource domains and landscapes. An environmental sociologist (Ph.D., Cornell University), he has published widely on rights, equity, accountability and institutional innovation in environmental decision-making, drawing on insights from action research to inform both policy and practice. Blake has led programs in South and Southeast Asia and East Africa to strengthen capacity to manage resource competition and is partnering to build a global community of practice on multi-stakeholder platforms for people-centered land governance. Blake is the immediate past Director General of WorldFish, part of CGIAR, the global partnership for a food secure future. As a member of the Scientific and Technical Advisory Panel of the Global Environment Facility, he has responsibility as adviser on international waters, comprising both marine and freshwater systems, and works across focal areas on integrated approaches to achieve transformational change and enhance environmental security at scale.