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At 6°C (the very upper end of the IPCC report), the planet loses its ability to create clouds. Which itself means another 7°C due to the lowering of the albedo. Certainly a civilization-ending event, and perhaps a life-ending one.

> Climate change will quickly wipe out most life on earth.

I think the resource shortages, water wars and refugee crises that precede the actual climate-driven apocalypse will get us there a lot faster than we imagine.

Climate change will probably help increase life on earth, given it will likely remove the most invasive and bio-suppressant species on earth today, humans

The odds of humans actually going extinct due to climate change seem pretty long. A massive reduction, sure, but all of them?

We don’t have to kill all the humans to prevent the extinction of life on the planet

True. Just give the planet 1M years to recover.

Certain species reproduce very fast and will definitely take advantage of the higher temperatures relatively quickly, within a century.