One of the most abused country on earth is Mexico. The marketing spills over the border, and people are persuaded to eat food that's bad for them, more in rich countries than in poor ones. I was traveling the world. What really struck me was the way we engage with food - how it's a global phenomenon - the world becoming more and more disconnected from it.

All of human history is about the going from sudden fat years to the sudden lean years. We've always had good times and bad, and we've had ways of managing the bad times. We have ways of insulating ourselves, making ourselves less sensitive for the bad times by having things like grain stores, for example. Pretty much every civilization that's lasted for any reasonable length of time has some food management principles behind it. But what's been happening over the past thirty years is it's failed - the insurance policy.

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.

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.

The current food crisis is an opportunity for companies to engage in agriculture or biotechnology.

We need to realize that these industrial methods of farming have gotten us used to cheap food. The corollary of cheap food is low wages. What we need to do in an era when the price of food is going up is pay better wages. A living wage is an absolutely integral part of a modern food system, because you can't expect people to eat properly and eat in a sustainable way if you pay them nothing. In fact, it's cheap food that subsidized the exploitation of American workers for a very long time, and that's always been an aim of cheap food.

A recent review of different agricultural options for the future was conducted by a panel of experts. The scientists posed the question: How are we going to feed the world when there are nine billion people on it, as there will be by 2050? And the answer they came up with was industrial agriculture won't work and genetic engineering won't work and the solution is going to be sustainable, and going to ecological kinds of farming that are based on local environmental conditions that work with local ecosystems available to develop a richer kind of farming technology.