The IPCC is the Intergovernmental Panel on Climate Change. This AR6 working group is composed of 234 authors from 66 countries with 517 contributing authors, over 14,000 cited references, 78,007 expert and government review comments and the final report was approved by 195 member governments.
See the IPCC's own top level summary of this report in the IPCC AR6 WGI Headline Statements. These emphasize that (1) the effects of climate change are only going to worsen over the next thirty years under all possible emission scenarios and (2) now is the critical short window in which we must reduce carbon emissions to avoid the worst scenarios.
The New York times reports the following 5 takeaways from the major new U.N. climate report:
- Humans have unequivocally warmed the plant
- Climate science is getting better and more precise
- We are locked into 30 years of warming
- Climate changes are happening rapidly
- There is still a window in which we can alter the climate path