Today the U.S. government can demand the nation-wide recall of defective softball bats, sneakers, stuffed animals, and foam-rubber toy cows. But it cannot order a meatpacking company to remove contaminated, potentially lethal ground beef from fast food kitchens and supermarket shelves.

I find that one of the most important things, as a writer, is to just show up - to just stay in the chair and fight through the difficult patches. As long as you're at the desk, and you're willing to fight it out, eventually the right words will come.

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.

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.

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

I think there could hardly be a more important subject than health and nutrition.

Congress should ban advertising that preys upon children, it should stop subsidizing dead-end jobs, it should pass tougher food safety laws, it should protect American workers from serious harm, it should fight against dangerous concentrations of economic power.