We kind of know that food is necessary to survive. But our ways of connecting with food have been, in many ways, taken over by capitalism - certainly taken over by the influence large corporations have on the way that we eat and the way that we think about food. That's why kids these days are more prepared to take nutritional advice from Ronald McDonald than they are from their parents or their teachers or from scientists. And particularly in urban areas, you'll see kids who honestly believe tomatoes come from the supermarket rather than from a plant.

I think we do need to worry about a food shortage, but we also need to worry about the quality of the food. A lot of the stuff that's marketed to us tastes delicious because it fools our bodies. It fools our bodies into thinking that a particular mix of fat and salt and sugar is good for us. In fact, it isn't. That's why you're seeing in the United States life expectancies are declining, particularly in rural areas. You're seeing life expectancies falling in part because of diet.

I do think we have a food problem. In 2006, which is the year for which we have the latest data, 35.5 million Americans were food insecure. That means there are 35.5 million Americans who are so hard up at some point during the year that they didn't know where their next meal was coming from. That's a lot of Americans. They don't get reported very much because there's nothing spectacular about people skipping a meal because they're poor. The media tends to ignore that, just as it ignores the sort of chronic food shortages elsewhere in the world.

For every $1 advertisers spend advertising something healthful like apples, they spend $500 advertising junk food.

India has the largest number of hungry people. Yet it's an outcome of precisely the same mechanism. It's the control of agriculture that drives down the price it paid for food that it buys from farmers, who are the poorest people. Then you're paying very little for food. You're underpaying the poorest people in any society. Then they're marketing to us the things that are most profitable to them. And those are the things that are packaged and processed and what-have-you. That means you have the simple thing of the explosion of obesity and hunger as a result of capitalism in our food system.

The one thing that everyone knows about America is people will say, I know my rights. One of those rights is the right to organize. When workers do get together and organize and drive up their wages, they are much, much better off. I think this is one integral part of food policy. We can't talk about increasing the price of food without figuring out how working Americans are going to pay for that.

The problem is that we are living now with the consequences of the others people mistake. It would be nice to make our own and learn from them. That is the art of democracy. That is the art of citizenship.