Our passion for meat involves over 60 billion land animals that require nearly half of all agricultural land for food and pasture. Livestock emissions, including carbon dioxide, nitrous oxide, and methane, are responsible for an estimated 18 to 20 percent of greenhouse gases annually, a source second only to fossil fuels. If you add to livestock all other food-related emissions—from farming to deforestation to food waste—what we eat turns out to be the number one cause of global warming.
