My focus was to showing the changes within the global food and climate system create remarkable challenge for human beings around the world. Majority of the world population, especially sub Saharan countries including Ethiopia are food uncertain. A composite set of influences cause the problem of food insecurity around the world. To solve those problems different studies were conducted by different scholars at global, national, regional and even at local level due to the multidimensional nature of these determinants in different contexts. To capture these differences analyzing food securities...