In this insightful discussion, Laura Wilcox, a meteorologist from the University of Reading, reveals how China transformed its air quality from smog-filled to clean skies, particularly ahead of the 2008 Olympics. She explains the immediate policy actions taken, like vehicle regulation and coal reduction, leading to a significant drop in pollution levels. However, Laura also highlights a surprising twist: cleaner air means reduced cooling aerosols, potentially accelerating global warming. The talk explores the health benefits of cleaner air while addressing the broader climate implications.