@SteffenR The diagram I presented is about CO2 MEASURMENTS from the '60s till today, It is not temperature forecasts. CO2 levels in the atmosphere are now ~400 ppm. Samples from air bubbles trapped in ice, show that CO2 levels never surpassed 300 ppm during the past 800,000 years. Source: NASA https://climate.nasa.gov/climate_resources/24/graphic-the-relentless-rise-of-carbon-dioxide/