Organic farming is a pursuit of sustainable agriculture. There are many reputable articles that clearly points out the need for sustainable agriculture to prevent serious environmental degredation. Here one examples: http://www.nature.com/nature/journal/v418/n6898/full/nature01014.html There are of course examples that clearly show environmental benefits (such as increased soil fertility, increased biodiversity, higher energy efficiency etc) from organic farming. Heres one: http://www.sciencemag.org/cgi/content/full/296/5573/1694 As a Ag. college student, you should already be aware of this.