I'm not OP so my answer may differ from theirs, but beef is one of the most environmentally-expensive forms of protein to produce. I.e., https://www.ewg.org/mea

I'm not OP so my answer may differ from theirs, but beef is one of the most environmentally-expensive forms of protein to produce. I.e., https://www.ewg.org/meateatersguide/a-meat-eaters-guide-to-climate-change-health-what-you-eat-matters/climate-and-environmental-impacts/ https://www.ewg.org/meateatersguide/a-meat-eaters-guide-to-c... and http://css.umich.edu/factsheets/carbon-footprint-factsheet http://css.umich.edu/factsheets/carbon-footprint-factsheet