The Belmont Forum has established collaborative research actions that promote transdisciplinary research to further address and understand global environmental change. These collaborative research actions aim to describe the Belmont Challenge priorities, recognize current resources and investments among Belmont Forum stakeholders, and foster new scientific partnerships. The call for proposals includes three environmental topics: Climate, Environment and Health, Disaster Risk, Reduction and Resilience, and Resilience in Rapidly Changing Arctic Systems. Proposals should include collaborators from at least three countries as well as the participation of natural scientists, social scientists, and stakeholders. For more information about this call for proposals, please review the Belmont Forum Opportunities webpage and view the Tutorial for Potential Applicants video.