牛肉消费具有较高的温室气体排放量

一项新的研究表明，在任何一天，20%的美国人占到美国人与饮食有关的温室气体排放量的近一半，而高水平的牛肉消费量是主要原因。

20 percent of Americans responsible for almost half of US food-related greenhouse gas emissions

https://www.sciencedaily.com/releases/2018/03/180320100821.htm

1. Martin C Heller, Amelia Willits-Smith, Robert Meyer, Gregory A Keoleian, Donald Rose. Greenhouse gas emissions and energy use associated with production of individual self-selected US diets. Environmental Research Letters, 2018; 13 (4): 044004 DOI: 10.1088/1748-9326/aab0ac