Two new reports paint a dismal picture of nutrition in the U.S. One says about 70% of products sold by the largest food companies, including Kraft, Heinz and Kellogg, are considered unhealthy. And that's the food that stocks a lot of U.S. grocery shelves. And new Gallup data shows just how much Americans' diets are lacking. It's not a new problem. But as NPR's Allison Aubrey reports, what is new is the momentum for change.