Just in the past couple of years, there's been pushback against some of that marketing, as parents have gotten really upset. Now we're seeing Coke and Pepsi kind of shape-shifting. Instead of doing these very explicit marketing deals, they are getting into schools in much more hidden ways - things like My Coke Rewards, where they encourage schools to push their student body to purchase Coke products, in exchange for points that go toward various products for the school. It's a way for these companies to get in front of kids, presented as a form of charity.

Every time you spend money, you're casting a vote for the kind of world you want.

Hope doesn't come from calculating whether the good news is winning out over the bad. Its simply a choice to take action.

The food industry is spending almost $2 billion a year marketing directly to children and teens. We know that those ads lead to children demanding certain brands, and we know that food and drink marketing gets all of us to consume more calories. If we're going to address diet-related illnesses, talking about marketing to kids is a key step. There should be places like schools that are protected sanctuaries from commercialization and from advertising, especially when it comes to kids' health.

Yes, there is a crisis of hunger on the planet, but hunger is not caused by a scarcity of food but a scarcity of democracy.

Even very progressive, informed people still get tongue-tied responding to the question, can organic and sustainably raised food still feed the world? A corollary to that question, and one we certainly hear a lot these days, is that genetically modified foods are better for the environment because they use fewer chemicals, which has been thoroughly debunked.

Courage is saying maybe what I'm doing isn't working, maybe I should try something else.