India, March 25 -- For much of the last decade, Delhi has been defined by its air pollution crisis. In the last two years, the city recorded no "good" air day - not one with an AQI below 50. Delhi chief minister Rekha Gupta spent her first winter in office against this backdrop - the first time since 2014 that the Centre and the Capital were under the same party. The conditions for a breakthrough, many Delhi residents thought, were finally in place. Instead, the Gupta government's first winter looked less like a departure than a continuation. The previous AAP government, for instance, portrayed the smog tower, which a government-commissioned IIT study found functionally useless, as one of its signature interventions. The Gupta government ...