I've written about illegal immigrants in the United States; I spent a year following migrant farm workers as they were harvesting. I've written about our criminal justice system, and how it treats the victims of crime. I've been working for years now on a book about prisons in America, and I've been going into prisons and traveling around the country and seeing what's going on.

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

Fast food is popular because it's convenient, it's cheap, and it tastes good. But the real cost of eating fast food never appears on the menu.

The Golden Arches are now more widely recognized than the Christian cross.

Students can do experiments and investigate for themselves what's going on in restaurants, in our food system, and begin a process of learning.

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

During my school visits, I really enjoy the feedback I get from them much more than anything I might tell say to them.