It's estimated that about 30 percent of the increase in grain prices could be attributed to the decision to embrace biofuels, particularly corn-based ethanol. It has done nothing for climate change and the business is in real trouble now with the collapse of oil prices. It's completely dependent on a dollar subsidy and tariff from the government.

Were the walls of our meat industry to become transparent, literally or even figuratively, we would not long continue to raise, kill, and eat animals the way we do.

Is it just a coincidence that as the portion of our income spent on food has declined, spending on health care has soared? In 1960 Americans spent 17.5 percent of their income on food and 5.2 percent of national income on health care. Since then, those numbers have flipped: Spending on food has fallen to 9.9 percent, while spending on heath care has climbed to 16 percent of national income. I have to think that by spending a little more on healthier food we could reduce the amount we have to spend on heath care.

All the arguments about nutrition are really about what is the problem ingredient in the western diet. Is it the fat? Is it the lack of fiber? Is it the refined carbohydrates?But we don't have to worry about it. We just have to try to get off that diet to the extent we can.

A French poet famously referred to the aroma of certain cheeses as the ‘pieds de Dieu’—the feet of god. Just to be clear: foot odor of a particularly exalted quality, but still—foot odor.

Very simply, we subsidize high-fructose corn syrup in this country, but not carrots. While the surgeon general is raising alarms over the epidemic of obesity, the president is signing farm bills designed to keep the river of cheap corn flowing, guaranteeing that the cheapest calories in the supermarket will continue to be the unhealthiest.

Food is also about pleasure, about community, about family and spirituality, about our relationship to the natural world, and about expressing our identity. As long as humans have been taking meals together, eating has been as much about culture as it has been about biology.