Unlike genocide, that situations fixable by voters, we just seem content with what we have.
We could Vote Green, who have policies around higher taxes fo the wealthy and and corporations and dental into medicare, free universty etc
hell, I dont vote Green to elect the Greens per se but to move the syatus quo off the orthodoxy and allow the Overton Window to shift.
Nothing changes until voters do.
as some one who lived and worked outdoors in tropical north Austalia for 45 years, before moving much closer to the south pole, i left when i needed AC as it was getting too hot and humad.
I used to visit social centres like the library and use their AC and WiFi or just read a book on the real killer, hot days. or go swimming :)
Good home insulation makes a difference but can only hold the worst of it off.
As to making it worse, the same thing with cars, plane flights etc and not voting Greens to eneact policy change. Just have to look around to see most people are making it worse with enthusiasm every day, they just feel no guilt :)