A good resource from Joan Whelan of the TOPS Program:
The UK-government commissioned Global Food and Farming Futures project is a two-year study of food security, growing challenges, sustainability, volatility, malnutrition and other critical issues, along with recommendations for drastic change to the international food system to meet current and future needs.
The report of the project - the product of stakeholder input from 400 experts in 35 countries - is available here: http://www.bis.gov.uk/foresight/our-work/projects/current-projects/global-food-and-farming-futures/reports-and-publications