Is Obesity a Problem that's Too Big to Solve?

The obesity epidemic is old news, but it's not getting better. One-third of young people are so overweight they're at risk of Type-2 Diabetes. Ten percent of infants and toddlers are dangerously heavy. First Lady Michelle Obama wants to end childhood obesity in a generation. She's joined the Surgeon General and Centers for Disease Control in the campaign against obesity. The food industry is under pressure to cut back on fat and calories. The beverage industry says it's stopped delivering sugary drinks to schools. But public relations and voluntary guidelines won't end a crisis with roots in technology and transportation as well as agriculture. We hear about the dangers of America's "culture of corpulence" and what change will require.