Michael Pollan is an author, journalist, activist and professor of journalism at the UC Berkeley Graduate School of Journalism. He has written several books on the topic of our current, flawed ways of providing food to our nation. He goes into greater detail about the way that human societies have obtained food, the current industrial system, the big organic operation, the local self-sufficient farm, and the hunter-gatherer. 

“Pollan's discussion of the industrial food chain is in large part a critique of modern agribusiness. According to the book, agribusiness has lost touch with the natural cycles of farming, wherein livestock and crops intertwine in mutually beneficial circles. Pollan's critique of modern agribusiness focuses on what he describes as the overuse of corn for purposes ranging from fattening cattle to massive production of corn oil, high-fructose corn syrup, and other corn derivatives. He describes what he sees as the inefficiencies and other drawbacks of factory farming and gives his assessment of organic food production and what it's like to hunt and gather food.”

Pollan’s expertise on the subject provides an in depth look at the pitfalls of our current food systems. Here is an video where he speaks more on his cause: