American farmers produced 600 more calories per person per day in 2000 than they did in 1980. But some calories got cheaper than others: Since 1980, the price of sweeteners and added fats (most of them derived, respectively, from subsidized corn and subsidized soybeans), dropped 20 percent, while the price of fresh fruits and vegetables increased by 40 percent.

I get letters from classes all the time. Say it's assigned in someone's 8th grade class, and the teacher asks everyone to write a letter to me about their impressions and what they learned. So, it's incredibly gratifying to hear.

Don't get your fuel from the same place your car does

The two things are synergistic, the health care crisis and the food crisis. Right now, to a large extent, the food industry's biggest product is patients for the health care industry and we have to break that.

I realize that at a certain point if we're going to change our food system, it's going to be the next generation that's going to be critical. This generation is very interested in food issues, very concerned about things like animal welfare and the impact of the food system on the environment.

A growing and increasingly influential movement of philosophers, ethicists, law professors and activists are convinced that the great moral struggle of our time will be for the rights of animals.

Don't eat any foods you've ever seen advertised on television.