c.e.o. irene rosenfeld plays with students at a chicago charter school. rosenfeld came to this charter school to see how the public school integrates health and wellness with academics. in the lunchline you won't find any oreo, only fruits, veggies and lean meats. like the school, kraft wants to be healthier, too. recently they increased the amount of whole grain in wheat thins and honey maid graham crackers. they also removed the transfats from oros an other products. rosenfeld told me food companies risk losing customers if they change their flavor. >> it's a challenge, but it's one of the things i'm most proud of. we have terrific individuals in our r&d facility, and they've done an excellent job on products like lunchable, like premium crackers and like our nut products and a number of our other offerings where we've been able to reduce the sodium content without compromising the taste. it's really... they're products selling quite well for us. >> there's been some criticism about u.s. companies exporting obesity to developing countries, and recently t