New Delhi, Feb. 3 -- As I write this, three important documents have just been placed in the public domain - the Union Budget and the manifestos of two political parties for the Delhi assembly elections. All the three documents have, for the first time, put an emphasis on air pollution. A cynic might say that this was only to be expected in one of the world's most polluted cities, and in a country which has 22 of the 30 most polluted cities of the world. But, it's more than that.

We've only just finished a national election. During that time, air pollution was only a bit of a squeak in a few manifestos. The interim budget didn't give it importance. It was only a shadowy issue. It wasn't seen as particularly relevant in Haryana even, during...