Food is life and the global food sustainability is essential to human being survival. The global food system is highly complex and is driven by various factors including environment, cultural, social and economic drive. It is vital to understand these drivers and their interaction in order to help to improve the public food sustainability policies. Global policies and projects desperately required in order improving the global food sustainability. Food sustainability is one of the unsolved global issues and great commitment is required starting from global policymakers, national governments, and every individual home. This research paper includes analysis and study of various elements such as global change science, policy, food crisis, factor affecting and challenging food security, data on status and future projection and potential ways of solving problems.