This report – Avoiding Future Famines: Strengthening the Ecological Basis of Food Security through Sustainable Food Systems - is a unique collaboration of 12 leading scientists and experts involved in world food systems. The report addresses an important aspect of the food security discourse: the ecological foundation of food security. The report argues that while factors such as availability, access, utilization and stability must be given adequate attention for global food security to be achieved, an underlying factor – the ecological dimension is not only largely being overlooked but is also being undermined. The report has two main objectives: To describe the problem. What is the significance of the ecological foundation of food security and how is this foundation being undermined by societal pressures?; To proffer some possible solutions. How can we build sustainable food systems?.