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.
Is there a „humanist nihilism“ movement? I mean a political and social narrative that the world would be better off without humans? Is there a party you can vote for, that aims to achieve this goal?
Not really. Most people want to stick around.
I recommend working to change how people interact with the world, rather than trying to get rid of people.
That would mean I also have to change. 😵💫 But I am a big part of the problem!
So start planning out how to change. I'd look at:
I've wondered the same thing. It's not quite exactly what you're talking about, it's just kind of related, but you may be interested in antinatalism.
That's the thing with nihilism though, if you beat the drum about it it ceases to be nihilism because it's an individual understanding of oneself in context with the world around you. If a party claims to be a nihilist they're just a power hungry shill, basically.
I believe what you would be wanting is anarcho-ism type movement (: