Industrial agriculture's huge carbon footprint
On the other side of the equation, industrial agriculture -- the practice currently employed by the majority of the developed world -- has a hugely negative impact on global warming. The U.S. food system contributes nearly 20 percent of the nation's carbon dioxide emissions; on a global scale, figures from the Intergovernmental Panel on Climate Change (IPCC) say that agricultural land use contributes 12 percent of global greenhouse gas emissions. Supporting industrial agriculture perpetuates these disturbing practices.