The International Symposium on Food Security and Nutrition in the Age of Climate Change brought together 250 experts from around the world to discuss the role of food and agricultural systems in the fight against climate change and presented concrete multi-sector solutions to address this global issue. The event placed special emphasis on the regional realities of West Africa and the Canadian North, and benefited from the presence of young people and members of Indigenous and Northern communities directly affected by these issues. The symposium was held in response to the recent rise in global hunger, which coexists with various forms of malnutrition and is being exacerbated by the impacts of climate change on food security and food production. The publication has been divided into seven major themes: 1) Climate change, food security and nutrition: the issues; (2) The agriculture sectors in the context of climate change; (3) Food systems in the face of climate change; (4) Natural resources: challenges and solutions; (5) Food security and nutrition in a changing North; (6) Summary of solutions; (7) Strengthening and adapting regional and international cooperation.