Do you know what's even less nutritious? Nothing at all. As with EVERYTHING, this is a story of competing trade-offs. Would the ideal be less carbon in the atmosphere? Yes. Of course. But if consuming carbon-filled fuels helps to grow the food, maintain the food, harvest the food, move the food, and get the consumer TO the food. I think it's an all-over win for the carbon-based fuels, even if the food is less nutritious. So, hurray for oil! Hurray for our industrial society!! I cheer our moves to carbon-free sources. However, I don't believe we can accelerate the transition by artificially reducing our dependence. In fact, we may actually slow it down by making the creation of those resources necessary to drive the transition prohibitively expensive.