by David Spratt
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Updated 29 September 2022
A significant paper on climate tipping points was published on 9 September, Exceeding 1.5°C global warming could trigger multiple climate tipping points. Having co-written a non-specialist’s overview on tipping points earlier this year, entitled Climate Dominoes, I looked forward to the new paper’s conclusions.
But on the very first page, there was a sense of science and politics on a collision course: the conclusions about appropriate climate goals did not seem to match the evidence, as I will explain below.
Now this is not a new story, but it points to the need to disentangle political conclusions from physical evidence. Often scientific reports and papers pull their punches, especially when it comes to IPCC, as we documented in our Breakthrough report, What Lies Beneath: The understatement of existential climate risks. But such reticence is not restricted to the IPCC.
The reasons for scientific reticence in the climate field are many, and may include: