BMJ Group Nov 5 2025 Medical and scientific evidence is proving invaluable in holding public authorities accountable for the impact of unlawful air pollution on people's health, say experts in  The BMJ 's climate issue today. Gaia Lisi and Rupert Stuart-Smith at the University of Oxford say that relatively few studies attributing health impacts to climate change have been published so far, but as this research field matures, methods are becoming more widely recognised, opening up new routes for