TL;DR 1. "The truth is, it is complicated" 2. 26% of CO2 production comes from food production (including vegan options) 3. The average (real values vary by

TL;DR 1. "The truth is, it is complicated" 2. 26% of CO2 production comes from food production (including vegan options) 3. The average (real values vary by a lot of factors) CO2 emission for 1kg of each of the following meals: Beef 71Kg; Lamb 12Kg, Poultry 10Kg, Tofu (vegan) 3.2Kg, Potatoes 0.5Kg. HOWEVER, not all beef is made the same! Some beef production emits as much as 105Kg of CO2 while others less than 9Kg of CO2. 4. Buying locally produced food does not result in significantly lower emissions since % from transportation is actually quite low. Shipping one Kg of avocado internationally results in 0.3Kg of CO2 per Kg transported. 5. 65% of the land used to raise cows is not suitable to grow crops thus making use of otherwise not useful land. However, a large % of cows are grown from cereal products and not grass land. 6. If we had a 100% vegan diet (assuming we could make that work and produce everything needed for this in every country on the planet) we could reduce our CO2 emissions by 16% <- Not revolutionary IMO implying we need a better solution than that. A quick research revealed to me that, like anything, there are techniques to reduce (or even make beef production have a negative CO2 emission). However, economic viability, etc comes into play. I will continue eating beef and reduce my carbon footprint by other means such as carpooling and using public transportation instead of owning a car.