Healthy and sustainable diets are essential for planetary health. Poor diets are a leading cause of ill health and death globally, and the food system is responsible for between 20% and 30% of global greenhouse gas emissions. On-going environmental changes are also having a direct impact on food production, and without substantial efforts to adapt to the new environmental conditions, the food system will struggle to deliver healthy and sustainable diets for all. In this episode, Karl Byrne has a chat with Professor Alan Dangour, the Director of LSHTM's Centre of Climate Change and Planetary Health, and Pauline Scheelbeek, Assistant Professor of Nutritional and Environmental Epidemiology, about the challenges our food systems face and what we have to do to ensure healthy, nutritional and sustainable food supplies to feed the World's ever growing population. You can find out more about the Centre of Climate Change and Planetary Health here.