Petroleumbased chemicals are the backbone of industrial farming, and fossil fuels are a required component of our long-distance, refrigerated, packaged, processed food chain. What are the "Seven Principles of a Climate-Friendly Diet" you discuss in your book? A: 1 Steer clear of processed foods. 2 Put plants on your plate. 3 Look for foods that have been raised without industrial chemicals and high-energy inputs. 4 Eat locally grown foods when possible. 5 Try to reduce food waste and find out ways to ensure your leftovers are given to those in need. 6 Bring your own bags to the store and avoid buying items with bulky packaging. 7 DIY food.