The last time the Earth was above 400ppm during the Pliocene era, when sea level was roughly 25 meters higher than today. That in itself is going to be catastro

The last time the Earth was above 400ppm during the Pliocene era, when sea level was roughly 25 meters higher than today. That in itself is going to be catastrophic once the climate and the planet catch up, but there are far worse consequences and emissions are still growing. Have you ever read about the Russian wildfires of 2010 which had a massive impact to global food prices which then triggered the Arab spring revolutions? That was a single event in a world below 400ppm but these heat waves are starting to occur with more frequency now and will have serious consequences. The IPCC is an organization that functions with consensus and their data is awfully outdated. Their assessments generally underreport the consequences of climate change. Here's a paper from 2010 which analyzed this: https://skepticalscience.com/pics/Freudenburg_2010_ASC.pdf https://skepticalscience.com/pics/Freudenburg_2010_ASC.pdf