Bleed the oil companies dry
It looks like oil giants are going to face a lot of lawsuits over the damage they have caused. If it’s shown that they knew how bad climate change was going to be and kept quiet, the payouts could be huge.
With too many governments paying lip service to fighting climate change, then subsidising the polluters, I think this is what is needed. Money is all most of the people involved understand. I they lose enough, they’ll comprehend the need to change.