These Cities Aren’t Banning Meat. They Just Want You to Eat More Plants. Meat and dairy production are linked to emissions of methane, a potent greenhouse gas.
The balance of the evidence to date is that raising ruminants responsible for something like 35-40% of anthropogenic methane emissions. That's big enough to be worth addressing.
Ok, I see. But still, 99% seems a little much, given a billion cows, the vast majority of which kept under conditions defined by humans to increase milk and meat production.
N3m37h's apparent belief that absolutely every other industry besides oil/gas is irrelevant for climate change. Oil/gas is obviously the biggest chunk but agriculture, construction, etc. all need to change too.