At any given time, the global livestock population amounts to more than 150 billion, compared to just 7.2 billion humans – meaning that livestock have a larger direct ecological footprint than we do. Livestock production causes almost 14.5% of global greenhouse-gas emissions and contributes significantly to water pollution.
在任何特定时点，相比仅仅72亿的全球人口，全球牲畜存栏量高达1，500多亿——这意味着牲畜比我们人类更能直接影响生态足迹。畜牧业生产造成严重水污染和近14.5%的全球温室气体排放。