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.

Kids have no idea when they're drinking soda what they're really drinking, and a lot of them are stunned when they learn that drinking a Big Gulp is like taking a big jar of sugar and just pouring it down. There are 50 teaspoons of sugar in a 64-ounce Big Gulp.

A public outcry usually masks a private obsession.

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

There's also a growing trend toward having gardens in schools to literally show kids where food comes from by having them grow and prepare their own food. There's also a movement that's bringing farmers into schools and creating relationships between local farms and local cafeterias, so that instead of frozen mystery meat, you have fresh produce that's coming from the area that has a name and a face associated with it.

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.

I really like visiting schools, but what I tell students isn't anywhere near as interesting to me as what they tell me.