i am already a vegetarian. I am not one who believes in climate change one way or the other. That said, there will be lab grown meat pretty soon dirt cheap on the market that will do wonders for the environment (although i hear veggie meat patties exceeds real meat patties in sales), but will likely lead to the wholesale slaughter of most domesticate farm animals-save for some food purists. Aside from cutting down on land, and water uses to feed these animals, there should also be secondary effects like less fertilizers used, less antibiotics, perhaps even less food poisoning. GMO meat would probably still exists and continue-perhaps at an accelerated rate since there there can be no cruelty with cripr-cas9 on adult stem cells. Probably more mom and pop farmers will lose their jobs, land, and livelihood, and larger animal based ones will cease to be.