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I am scared
(slrpnk.net)
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.
Winter is the new spring. No but seriously: nature is going to be absolutely fine and it will sort itself out, humans on the other hand...
Well, humans and a shitload of other species, but evolution will go on.