Wait for the Sun to burn out.
The majority of long term temperature changes affecting the Earth are due to variations in the Sun's output.
Volcanic dust etc. can also affect climate, but for relatively short periods.
The so-called "global warming" effect is just things recovering to a state similar to the "Medieval warm period", following the little ice age period around 1700 (coincident with a drop in solar output labelled the Maunder Minimum).
Links:
https://static.skepticalscience.com/pics/c14_history.gif
https://upload.wikimedia.org/wikipedia/commons/thumb/2/28/Sunspot_Numbers.png/800px-Sunspot_Numbers.png
I'm not saying pollution is good, it's definitely bad - but it's not responsible for the global temperature changes it's been blamed for. Nothing we do on Earth affects the Sun's output, and the changes in that are very well documented.