A catalytic case is a decision whose holdings have been the load-bearing arguments other courts have borrowed.

The five cards below are the most-cited source decisions across the corpus — the cases other jurisdictions reach for when they have to articulate what climate-litigation reasoning looks like. The selection is data-driven, recomputed every time the dataset is refreshed; the ranking is not editorial.

Each card reveals progressively more detail when opened: the full table of citing jurisdictions, a year-by-year stack of citations, the case's key holdings, and the citing decisions themselves grouped by country.