I wondered where this article got the idea that "half the planet" would die "in 26 years or less" with 3°C of warming. It appears to be a misreading of the table in https://actuaries.org.uk/media/ni4erlna/planetary-solvency.p... "Figure 12: Planetary solvency risk impact and likelihood definitions (illustrative)" qualified by "A risk impact matrix is a methodology for ranking potential impacts, not a prediction or central scenario."

In particular, they rate ≥50% mortality as Extreme and also rate warming by 3°C or more by 2050 as Extreme (this is relevant for the colorful severity/likelihood grids that are the focus of the paper) and somebody appears to have made the incorrect connection that an Extreme climate would cause Extreme mortality, and also by the time the Extreme climate is reached and not afterwards. Elsewhere, the paper mentions that "We have not shown an assessment for mortality in this illustration, as very limited research has been carried out on the potential for large-scale loss of life in relation to these interconnected risks on which to base an assessment."

Unfortunately, that makes the article title highly ironic.