Book excerpt: Interactions: Food, Agriculture And Environment is a component of Encyclopedia of Environmental and Ecological Sciences, Engineering and Technology Resources in the global Encyclopedia of Life Support Systems (EOLSS), which is an integrated compendium of twenty one Encyclopedias. The Theme on Interactions: Food, Agriculture and Environment focuses on methods to ensure the development of agriculture and food production to be in dialectic unity with the surrounding natural environment. In every country of the world agriculture always faces complex problems: how to significantly increase production of agricultural products to supply the population with sufficient food, and industry with sufficient raw materials, and how to satisfy the permanently growing demand. The acuteness of this task has always been linked with the demographic factor and the need to guarantee the population with a high living standard free of starvation and poverty. These two volumes are aimed at the following five major target audiences: University and College students Educators, Professional practitioners, Research personnel and Policy analysts, managers, and decision makers and NGOs.