To compensate for that, all they have to do is give more cows beer to drink (like this guy is doing).
The loss of all that hot air could cause global cooling.
What loss?
Global cooling would destroy civilization because a Ice Age, Major or Minor would cut food production 75% to 85%. Better hope for Global Warming, at least you can grow food in many climates but not a Cold Climate.
To compensate for that, all they have to do is give more cows beer to drink (like this guy is doing).