Food Inc., an American documentary film a few years ago (not such exactly when, but I think it's released some time after 2007. 2007 is the most recently exciting year for gamers so this year is signified for me. 2007 is also the year when economies of all over the world reached their peak. I think this directly led to the prosperous gaming year of 2007.)
It discussed how food supplies of developed world are controlled by corporation. As it put it, food stuffs are no longer grown by farms, but by facilities more like factories. "Farmers" are, bound by contract with corporations (names included, but I guess you better watch the film yourselves, I give no positive nor negative comments towards those firms), produce food as demanded by corporations for sole purpose of profit maximization. You would see that seasonality of food supplies is completely ruled out and food items appear in supermarkets regardless of their respective seasonality. People are eating less healthy and all sorts of health issues raise.
There is an infamous name, Monsanto, being mentioned. This is a very well-known firm which is having large business deals with our governments over supplies of soybean seeds. This firm plays a vital role in Sino-American trade relation, essentially in agricultural business.