When you go into a fast food restaurant, you may just think about how good your meal tastes while you're eating it. But you're not thinking about all the consequences that come from that one purchase - the consequences for your body, the consequences for supporting this company and how it's treating it workers, all the way back to the farm where the potatoes were grown, or the ranch where the cattle were raised.

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.

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

Fast food is inexpensive, convenient, and it tastes good. I'm all in favor of that. My problem is how heavily processed it is - how full of salt, fat, and sugar it is.

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

The obesity epidemic among American children is becoming so bad that I think there's a growing realization across the country that we've got to change what we're feeding our kids and that school may be a really good place to start.

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.