Basically, I'm a perpetual student. I start by finding a subject I really don't know very much, but that I'm curious about. I learn about it through books in a library, by doing interviews with people who know a lot about the subject, and by going out on my own and seeing for myself what's happening.

Fast food chains spend a large amount of marketing to get the attention of children. People form their eating habits as children so they try to nurture clients as youngsters.

The United States now has more prison inmates than full-time farmers.

The life's work of Walt Disney and Ray Kroc had come full-circle, uniting in perfect synergy. McDonald's began to sell its hamburgers and french fries at Disney's theme parks. The ethos of McDonaldland and of Disneyland, never far apart, have finally become one. Now you can buy a Happy Meal at the Happiest Place on Earth.

Yes, a cheeseburger and fries is probably my favourite meal. But I don't eat ground beef anymore.

We can have Americans eating affordably and eating in a way that's sustainable.

There's been a growing effort to kick soda out of the schools. And governors as different as Arnold Schwarzenegger in California and Mike Huckabee in Arkansas have worked hard to get soda and junk food out of their state schools, which is good.