The IPCC Assessment Report 6 (AR6) Working Group I (WGI) report was published last month. The first assessment report (AR6) was published in 1990. WGI reports the Physical Science Basis and will be followed by Impacts, Adaptation and Vulnerability (WGII), and Mitigation of Climate Change (WGIII). AR6 WGI delivers this report with much higher urgency. In this episode, I provide an overview of 3 key messages, followed by the 17 key scientific points. For the die hards out there, I then read out the second half of the Summary for Policy Makers (having read the first half in an earlier unpublished episode). KEY MESSAGES: 1. Climate change is measurable and has been observed. 2. Induced levels of greenhouse gases (GHGs), particularly CO2, will cause a threat to human way of life and the biosphere. 3. Reductions of GHG are needed to reduce the impacts and risks of future climate change. SCIENTIFIC POINTS (1st 5 of 17): 1. Climate change is more visible and is increasing intensity, more than expected and indicated in earlier assessment reports. 2. Natural variability influences extreme events. We are now seeing more extreme events. 3. There is now more water vapour in the atmosphere. This has led to more flooding. 4. Current warming has already increased cyclone, hurricanes, and tropical storms. 5. Reducing GHGs and decreased deforestation are necessary. Thank you all for listening! This episode was broadcast live on radiopatapoe.nl on Friday 1st October 2021.