#Europe combine probabilistic climate attribution with city- and age-specific temperature–mortality relationships to estimate heat-related mortality in 854 European cities during the summer months (June–August) & compare with counterfactual climate conditions representing a world without human-caused warming. We estimate 50,391 heat-related excess deaths across the 854 cities during the summer, with around two-thirds of these attributable to anthropogenic climate change https://www.nature.com/articles/s44360-026-00220-z