1. Please tell our moms more about your book, "On a Dollar a Day."

Our book is the story of how we came to start eating on a dollar a day, what the experience was like, what we learned, and ultimately what questions we were left with about what we eat and why. Inaddition to re-telling the story of our dollar a day experience, we also experiment with spending the average amount that people receive on food stamps, as well as our quest to redefine how we eat without going broke. Readers get to see what it was like for two high school teachers to navigate the complexities of an overwhelming food system.

2. What can we do to make our food system healthier in the current economy?

We can start by being honest about where our food comes from; how it impacts animals, the environment, and of course, our bodies. Next, we should demand that all people have access to high quality healthy options at a cost they can afford. There's a reason why people can afford products made with corn and corn sweeteners, but struggle to buy fruits and vegetables. Our government heavily subsidizes the foods that are the worst for us, making it cheap and easy to get fat.

3. How do you think the American diet will have changed in 25 years?

We're confident that as people continue to learn more about where ourfood comes from, they will demand healthier and more sustainable food choices. Additionally, if our country is serious about stopping the damage of climate change, we will have to move toward a vegetarian diet. Animal agriculture is the largest contributor of greenhousegases, and it is the easiest and most effective way to lower our impact on the earth.

4. What is your guilty food pleasure?

Chocolate. Christopher is a chocolate fanatic, but we always make sure to buy chocolate that is certified as fair trade and organic.Unfortunately, this sweet treat has a sour story, as much of the world's chocolate comes from West Africa, where child labor and slavery are common in the industry.

5. Is it costly to eat healthy diets? What is your opinion on this?

It depends on how you define "healthy." However, if you're preparing your own food, and if you're eating a diet rich in whole grains, with lots of fruits and vegetables, it can definitely be affordable for most Americans (assuming you live somewhere that has access to these foods). If you're eating out at a chic "healthy" place every night,it's not going to be cheap. Yet, many people live in areas where the only places to buy groceries are bodegas and corner stores, who only offer pre-packaged items that are high in fats and sugars.

6. Tell us more about the Food Cost Index and how to make optimal use of it.

The Food Cost Index on our site is really just a list of the things we ate while on the dollar diet. It won't be of much use to anyone unless they want to compare how prices have changed since that project.

7. What are the benefits of "go organic" in your point of view?

The main reason to buy organic is to keep petrochemicals out of our water and soil. These toxic chemicals are terrible for the planet andeveryone who lives on it. Think about it, these are chemicals that were made to kill things, which is exactly what they do. When you introduce these agents into the natural environment they affect everything in that ecosystem, from bugs to birds, to the people who are harvesting your vegetables.