One of the problems is that the US government supports unhealthy food and does very little to support healthy food. I mean, we subsidize high fructose corn syrup. We subsidize hydrogenated corn oil. We do not subsidize organic food. We subsidize four crops that are the building blocks of fast food. And you also have to work on access. We have food deserts in our cities. We know that the distance you live from a supplier of fresh produce is one of the best predictors of your health.

I've always been interested in plants because I'm a gardener, so I have a basic understanding of botany and things like that, but it's all self-taught.

Ecology also teaches that all life on earth can be viewed as a competition among species for the solar energy captured by green plants and stored in the form of complex carbon molecules. A food chain is a system for passing those calories on to species that lack the pant's unique ability to synthesize them from sunlight.

One of the powerful things about the food issue is that people feel empowered by it. There are so many areas of our life where we feel powerless to change things, but your eating issues are really primal. You decide every day what you're going to put in your body and what you refuse to put in your body. That's politics at its most basic.

Meat is a tremendous environmental challenge. It contributes enormous amounts of greenhouse gas, especially beef eating.

Eat food. Not too much. Mostly plants.

Seeds have the power to preserve species, to enhance cultural as well as genetic diversity, to counter economic monopoly and to check the advance of conformity on all its many fronts.