The first report from the Intergovernmental Panel on Climate Change (IPCC) on the science of climate change was released in 1990. The most recent one, the 6th Assessment Report (“AR6”), released two weeks ago, thus marks more than 30 years of operations. I’ve been an expert reviewer for both the physical science and social science working groups since the Fourth Assessment Report (AR4), which first went out for review in August 2005. I’ve criticized the IPCC in the past for being obtuse when it comes to reporting findings that go against its preferred narrative. I can illustrate the long-standing nature of this problem by explaining the history of a single sentence in the AR6.
