History of World Hunger and Sustainable Agriculture

This map shows that world hunger affects every population, but most notably in countries in Africa and Asia.
We understand that world hunger has always been an issue in the world and will continue to be. For example the Irish Potato Famine in the 1800's to the suffering and lack of food in the Darfur region currently. However with the development of sustainable agriculture I believe world hunger can be greatly reduced.
A brief background into sustainable food; it has really become popular within the last few decades. Especially with the implementation of hydroponic and organic farms. With the ability of hydroponics, vegetables can be grown year round without worrying about the effects of the elements. Also more vegetables can be grown in smaller areas without erosion and without costly chemicals.
Hydroponic food was used in the Pacific Ocean before and during WWII where soldiers grew vegetables on the soil poor islands. Hydroponic farms have since advanced and are (as well as organic farms and sustainable agricultural practices) becoming more and more essential in fighting world hunger.