Climate
Discussion of climate, how it is changing, activism around that, the politics, and the energy systems change we need in order to stabilize things.
As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades:

How much each change to the atmosphere has warmed the world:

Recommended actions to cut greenhouse gas emissions in the near future:

Anti-science, inactivism, and unsupported conspiracy theories are not ok here.
Some sites break when you disable javascript, but guardian.com instead starts working.
Thanks for the tip! I thought I had every extension for finer control, but I guess I hadn't thought of one that just disables javascript, and you're right, it does just work on that site.
I'm using ublock origin to disable JS globally and re-enable it per-site from the popup. I didn't realize it could do that until I read the manual.
Ahh, yeah, that's much more convenient, saves having another icon in the already crowded extension bar.