> Also that livestock farming in the US only contributes 3% of the nation's greenhouse gas emissions

"Worldwide, livestock accounts for between 14.5 percent and 18 percent of human-induced greenhouse gas emissions. The percentage is lower in the United States in part because our overall greenhouse gas emissions are so much higher than other countries"

https://www.nytimes.com/2018/01/25/climate/cows-global-warmi...