Delhi's pollution numbers just don't add up. It's a mess. For over a decade, the city has tried to measure what's polluting its air. What's happening now is weird: a study gets commissioned, results are out, and then its cancelled. Without explanation. The latest being a ₹12 crore study, as AAP and BJP fight over "science". Despite this, every winter, headlines and "experts" confidently declare "40% from stubble burning!" and "20% from vehicles!" with a false veneer of mathematical precision—which just doesn't exist. @anushkantala and I went down this rabbit hole and found how measuring air pollution has became a political game. I wrote about this in @theplankmag's new section where we share important findings and unresolved questions that don’t fit our main stories but deserve attention. Please read. Link in next tweet. It might change how you read every future story about air pollution.