Genetically modified ingredients are deeply embedded in the global food supply, having proliferated since the 1990s. Most of the corn and soybeans grown in the United States, for example, have been genetically modified.”…these food products are somehow different or present a special risk or a potential risk,” http://www.nytimes.com/2013/03/09/business/grocery-chain-to-require-labels-for-genetically-modified-food.html?pagewanted=all Labeling is already required in the European Union, products in Whole Foods’ seven stores in Britain are already marked if they contain genetically modified ingredients. The labels currently used show that a product has been verified as free of genetically engineered ingredients by the Non GMO Project, a nonprofit certification organization. Voters defeated a hard-fought ballot initiative in California late last year after the biotech industry, and major corporations like PepsiCo and Coca-Cola, spent millions of dollars to fight the effort. Other initiatives have qualified for the ballot in Washington State and Missouri, while consumers across the country have been waging a sort of guerrilla movement in supermarkets, pasting warning stickers on products suspected of having G.M.O. ingredients from food companies that oppose labeling. Proponents of labeling insist that consumers have a right to know about the ingredients in the food they eat, and they contend that some studies in rats show that bioengineered food can be harmful.