A legal dispute over climate-related policies has highlighted concerns about the scientific models underpinning environmental planning. Prosecutors argue that certain nonprofit organizations based their projections on a climate scenario, known as RCP8.5, which has since been widely discredited by researchers. The scenario, once used to illustrate worst-case warming projections, has been deemed overly extreme and no longer reflects current scientific consensus. Critics question whether its use undermines the credibility of climate adaptation strategies still relying on its outdated assumptions.
Part of the AG's argument was that the nonprofits relied on a climate change scenario, RCP8.5, that has been recently "retired."