So I gather the scenario presented by the fictional climate scientist in "The Newsroom" (which I haven't seen) was prescient?
Here's McPherson's blog:
https://guymcpherson.com/
As someone whose life has always been chaos, I can't really sit around in my high tower regarding the situation with any sense of impending doom. I can only look at the numbers. Global warming is already throwing the lives of millions of people into chaos and some of them will not survive. But this kind of chaos is nothing new in the human experience. The scale is larger because there are more of us.
I'm an evolutionary biologist by natural inclination and some formal training. I tend to write from that perspective. When some say "The sky is falling!" I'll probably think, "The sky is always falling."
In a few million years our civilization will be an odd layer of crud in the geologic record. If there's anyone around who recognizes that crud as the remains of a high energy industrial civilization I'm not sure how much they'll have in common with me.
If I was Emperor of the Earth, I might say, "Look, humans, you have fifteen years to quit fossil fuels. After that I will start destroying all your fossil fuel facilities from the high ground of my impenetrable space fortress."
Sort of like the Enterprise in the first episode of Strange New Worlds.
I'm not Emperor but I can still emphasize the necessity of quitting fossil fuels in my writing. And I can be kind. Sometimes.
Perhaps the same Cosmic Beings the dinosaurs pissed off are, at this moment, sitting around lazily waiting for us to destroy ourselves so they don't have to send a big rock our way...

https://en.wikipedia.org/wiki/Cretaceous%E2%80%93Paleogene_extinction_event
So let's not destroy ourselves and let's not piss them off.