Enveloped in a thick layer of smog, Delhi is struggling to breathe, with its air quality deteriorating to the ‘very poor’ category. There is literally no escape from the situation as working professionals and school children head outside every day, hoping for things to get better miraculously. According to official data, things are expected to remain like this for the next 5-6 days. Not just Delhi, several cities and towns across North India are recording similar levels of air pollution.

While people in Delhi are feeling hopeless in this situation, a decade back, Beijing offered a remarkable story of turnaround. In 2015, the Chinese capital’s skies were no better than Delhi’s and its average AQI was 144, comparable to Delhi’s current pollution levels. Yet by 2023, Beijing had slashed it

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