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Tipping point is considered 450ppmv CO2, a point at which no technology can reverse worst-case climate change scenario.

https://en.wikipedia.org/wiki/Tipping_points_in_the_climate_...

The second paragraph of that page says "Climate scientists have identified over a dozen possible tipping points".

From the article first paragraph "with temperatures set to punch through the critical 1.5 degrees Celsius *threshold* by the early 2030s, a decade earlier than anticipated just three years ago."

So, if 450 ppm is bad, wouldn't 900 ppm be worse? It wasn't so long ago in the climate's history that it was that way. Not so long before that, it was 1800. Wouldn't that make the world ultra-XXXL screwed beyond belief? What happened there?

13 Misconceptions About Global Warming https://www.youtube.com/watch?v=OWXoRSIxyIU

The Last Time CO2 Was This High, Humans Didn’t Exist https://www.climatecentral.org/news/the-last-time-co2-was-th...

CO2 – Why 450 ppm is Dangerous and 350 ppm is Safe https://sustainabilityadvantage.com/2014/01/07/co2-why-450-p...

And of course this one: https://skepticalscience.com/co2-higher-in-past.htm

Thanks for the links!

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