How much CO₂ does a vegetarian diet save per year?
A vegetarian diet saves an estimated 0.5–1.5 tons CO₂e per year compared to an average omnivore diet in the United States, based on lifecycle analysis data from Poore and Nemecek (2018) and Heller and Keoleian (2015). The exact saving depends on what replaces meat — a vegetarian diet high in dairy carries substantially more emissions […]