pollution


Pollution solution: The role of scrubbers in cutting emissions and improving health

Air pollution hurts both people and planet, with emissions contributing to higher hospitalisations and deaths in countries around the world. Coal is particularly harmful but remains an important energy source worldwide. This presents policy-makers with a tricky trade-off between energy supply, emissions goals and human health. But technology can help. This column presents evidence from the United States, exploring how the installation of systems called ‘scrubbers’ on coal power station exhausts can reduce SO2 emissions, leading to lower instances of heart disease in nearby and downwind areas. This research could help clarify cost benefit analyses of different climate measures, while also feeding into policies promoting health.