Given the large differences in impacts associated with plant versus livestock protein-based diets, satisfying nutritional requirements through largely plant-based, regionally appropriate diets must be emphasized …. As of 2000, the livestock sector is estimated to have contributed 14% of anthropogenic greenhouse gas emissions (18% taking into account land use, land use change, and forestry) (5), 63% of reactive nitrogen mobilization*, and consumed 58% of directly used human-appropriated biomass globally (3) …. Across the board reductions in per capita consumption of livestock products should similarly be a policy priority.