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Al Gore Is Still Sounding the Alarm About Climate Change
(www.nytimes.com)
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.
and then we re-elect them.. Green vote in Germany's recent election down 2.4%, AfD up 8%.
Now the Greens are a bit too liberal (by necessity, or they be even more ignored then they are now) but the path to any level of sanity lies through them being able to move the Overton Window to the truly radical politicians we need.
however, it's very possible we've already passed the point of no return, certainly by 2030-2035 we will have if we continue, as too many tipping points will be crossed to find a way back to a stable biosphere for millennia.