Report: Climate and clean air action could avert 144M premature deaths by 2050

A report projects that without stronger intervention, global exposure to dangerous PM2.5 concentrations will rise from 27% of the population in 2025 to 34% by 2050. It claims coordinated climate and clean air policies could prevent 144 million premature deaths by mid-century. The figures are model-based projections, not observed outcomes, and the report's methodology is not detailed in the item.