Different foods require different amounts of energy to produce. Meat is four times as demanding as grains are. If consumers would gravitate toward less intensive foods, energy use would drop. Reducing the enormous amount of food that is wasted would save energy as well. Check out the data and commentary below, expanding on "More Food, Less Energy" in the January 2012 issue of Scientific American.
Credit: Jen Christiansen, Source: University of Texas at Austin