For great many species today, fitness means the ability to get along in a world in which humankind has become the most powerful evolutionary force.

A growing body of research suggests that many of the health problems associated with eating beef are really problems with corn-fed beef.

A vegan in a Hummer has a lighter carbon footprint than a beef eater in a Prius.

Better to pay the grocer than the doctor.

I really do think that cooking is very important. It's really important for the farmers because it means you're going to be buying real food and not processed food, so that means the farmers will capture more of your food dollar.

Organic Oreos are not a health food. When Coca-Cola begins selling organic Coke, as it surely will, the company will have struck a blow for the environment perhaps, but not for our health. Most consumers automatically assume that the word "organic" is synomymous with health, but it makes no difference to your insulin metabolism if the high-fructose corn syrup in your soda is organic.

I mean, we're really making a quantum change in our relationship to the plant world with genetic modification.