Good news!  The next Climate Summit or Climate Change Conference COP 28 (November 30 to December 12) will serve mostly vegan food! 

https://www.greenqueen.com.hk/cop-28-uae-un-climate-summit-serve-mostly-vegan-food-leaked-controvers/

  A few years ago--maybe it was in Copenhagen?--they showed what each food selection did in terms of  the "weight" of the carbon footprint.  Here's something I cut and pasted from the article:

It comes after a pivotal study in Nature Food https://www.nature.com/articles/s43016-023-00795-w last month outlined the significant impact of animal agriculture on climate change. It found that vegan diets can cut planet-heating emissions, land use and water pollution by 75% when compared to meat-heavy diets. Similarly, a 2021 report https://www.nature.com/articles/s43016-021-00358-x in the same journal revealed that global greenhouse gas emissions from animal-based food are twice as high as those from plant-based food.

I'm sorry to say that the delegate representing the host country is sitting beside a bottle of water--not his own water bottle.  But, hey, let's celebrate what we can!