History of Agricultural Development Food Gathering Domestication of Crops Organic Farming Transgenic Farming since Green Revolution) High inputs of energy subsidies including fertilizers, pesticides, fossil fuels, mechanization, irrigation advanced technology High outputs at the expense of environmental integrity Contamination of ground water surface water by agrochemicals sediments Hazards to human and animal health(e.g. residual effect of methamidophos in vegetables, Agent orange in Vietnam, cross-Atlantic DDT contamination Loss of genetic diversity in plants and animals