The article discusses the need to change peoples diet on eating animal products. It notes that animal production contributes carbon dioxide and methane and meat production plays a role in major environmental problem such as climate change. It mentions that staple crops should be feed to people instead of farmed animals where products can only turn a small fraction of food into flesh. Intergovernmental Panel on Climate Change chairman Rajendra Pachauri states that for vegetarian diet should be promoted in the developed world for environmental reasons