*Introductory Chapter: Concept of Food Security and Its Overview DOI: http://dx.doi.org/10.5772/intechopen.109435*

exists between reducing human-caused greenhouse gas emissions and ensuring food security within the context of the food system that is already in place. As a result, a systematic and comprehensive method is required in order to satisfy the immediate and long lasting needs of food security while also reducing the adverse effects on the environment caused by greenhouse gas emissions caused by the activities involved in the food system itself. Our understanding is always expanding, despite the fact that it is not entirely obvious what sustainable food systems might look like in practice [28].
