1 Identifying emerging and complex challenges in food and health systems by Martin Kohlmeier, Elaine MacAninch, Sumantra Ray, Luke Buckner, Dominic Crocombe, Shane McAuliffe, Peter Van Dael, Jeffrey Bohn, Christoph Nabholz, Marjorie Lima do Vale, Harry Jarret, Nikhita Raja, Jørgen T Johnsen, Jonathan Anchen, Maneesh Mishra, Kannan Raman, Bryndís Eva, Kerri Wazny