The availability of food and the ability of individuals to access it is measured by food security. The food is required to be safe and nutritious in order to be considered under this category. The four factors which determine food security are availability of food, access to food, use of food and the stability of the first three factors. There are numerous challenges which threaten food security such as global water crisis, climate change and land degradation. Several countries around the world are facing a water crisis, which in turn leads to a grain deficit. This drives up the price of grain, making it inaccessible for economically weaker sections of the society. The book studies, analyzes and upholds the pillars of food and energy security, and its utmost significance in modern times. Those in search of information to further their knowledge will be greatly assisted by this book. It will serve as a valuable source of reference for graduate and post graduate students.