I am a left wing enviro guy
Seriously, we are all being exposed to mercury in the air, lead everywhere. There is a thick coat of green panic growing under my sink etc. LOL I wish more voters cared about real hazards. 
I still have a hard time sweating global warming. My research says we should be entering the end of the brief 12,00 year inter glacial warming period.
I predict that based on the past earth ( geological rock interpretations), the glaciers ass has not been handed to them. We will freeze our buts off soon.
Sorry,
geologist speak. You won’t see much observable in your life time. But say 500 years down the road, I say 50/50 warmer or colder.
5000 years, up times street, and it will be really , really, cold IMHO.
I base this projection on a study of the earths climate ( generally accepted) that says it was mega super god damned cold until 10,00 years ago.
And that it was frozzen ffen beyond all god zappin before that for like hundreds of thousands of years. Seriously.
So maybe humans aren’t the cancer of earth . 
A serious, pragmatic assessment of earths climate will show it is not stable. I would be amazed if 100,000 years from now, the ice had not reclaimed earth.
Well, OK, I won’t be amazed unless I was frozen with frog genes or something.
I’m a serious enviro guy, but CO 2 has upsides.
Plants love the shit. they call it sunshine oxygen.