Fast food, fat profits: Obesity in America (& Canada?)

As a follow-up to our discussion, here's another take on industry influence on the way we eat. Josh Rushing of Al-Jazeera explores the world of cheap food for those living at the margins. What opportunities do people have to eat healthy? Who is responsible for food deserts and processed food in schools? Rushing finds food revolutions taking place and speaks with the people that are fighting back.