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.

I think for real change to happen, it's going to have to come from the kids, the community, the teachers, the parents.

There's a real strong link today between soda consumption and obesity among children.

A typical workday for me is getting up at about 5:00, 5:15 in the morning, getting some coffee or tea as quickly as possible, and then getting to my desk. And ideally, I'll start writing around 5:30, 5:45, and I'll write for three, four hours, and then I'll take a break, and read over what I write. Maybe about lunchtime, I'll go exercise or get out into the day. Then I'll either read over what I wrote the day before and quit work around 3:00 or 4:00 in the afternoon and spend some time with my kids.

The way we eat has changed more in the last 50 years than in the previous 10,000…. Now our food is coming from enormous assembly lines where the animals and the workers are being abused, and the food has become much more dangerous in ways that are deliberately hidden from us. This isn’t just about what we’re eating. It’s about what we’re allowed to say. What we’re allowed to know.

I went into the library and read about fast food and became amazed by all the stuff I didn't know. I learned that there is a whole world behind the counter that, it seemed to me, has been deliberately hidden from the public.

McDonald's has been extraordinary at site selection; it was a pioneer in studying the best places for retail locations. One of the things it did is study very carefully where sprawl was headed.