As winter sets in, air pollution has reached alarming levels in South Asia, with Delhi and Lahore suffering some of the worst air quality globally. On Tuesday, Delhi’s air was blanketed by smog, pushing the Air Quality Index (AQI) past 400 in many areas, signifying severe pollution. Lahore, meanwhile, recently claimed the title of the world’s most polluted city, with Pakistan attributing its escalating smog crisis in part to cross-border pollution from India. The ongoing pollution emergency has intensified diplomatic tensions, with both cities scrambling to manage the health impacts…