@jme I re-opened this older thread and moved your post here. As you will see, you are far from alone, and others have already suggested some coping ideas, especially in the earlier few posts.
This related topic may also be of interest:
https://forum.inaturalist.org/t/climate-change-how-can-we-stop-it-how-much-worse-can-the-problem-get-why-we-need-to-stop-this-now-why-i-care-about-action-and-more/22619