The average American kid will have some 3,000 school lunches by the twelfth grade. But what are they eating? When filmmaker and author Amy Kalafa went into school cafeterias, she found lunch trays laden with chicken nuggets and French fries, but little in the way of healthy choices. The question she kept hearing from parents though was "What do we do about it?" Kalafa has written a book called "Lunch Wars," and Tuesday, she joins us to explain how to start a school food revolution.