A Long and Difficult Ascent.
> International Monetary Fund
Specifically check Chapter 3: Mitigating Climate Change
'Without further action to reduce greenhouse gas emissions, the planet is on course to reach temperatures not seen in millions of years, with potentially catastrophic implications.' >

https://www.imf.org/en/Publications/WEO/Issues/2020/09/30/world-economic-outlook-october-2020