Seven of the top 10 most polluted cities on the list and 15 of the top 20 — including New Delhi — and 25 of the top 50 are in India. India was the world’s third most polluted country, after its neighbours Bangladesh and Pakistan. This is hardly shocking, as such lists have now become an annual event.

India has to tackle pollution aggressively and immediately, just like China did. China is the world’s largest polluter, followed by the US and India. China and India are committed to the 2015 Paris Agreement on Climate Change, which aims to contain global surface temperature rise to 2 degree Celsius by 2100 above pre-industrial levels and even attempt to limit it further to 1.5 degree Celsius. The US in June 2017 pulled out of the agreement…