This is not something often discussed when you talk with people about how we are destroying the planet.
We’re Eating This Planet to Death! https://www.wired.com/story/ipcc-land-report-food
Labs and cows also release different greenhouse gases. To grow meat in the lab, you need electricity, which means CO2 emissions. That CO2 lingers in the atmosphere for thousands of years, whereas the methane released by cows lasts more like 12 years. Powering future lab-grown meat facilities with renewables will be essential to improving the climate-wrecking profile of meat.