Why year after year, promises are made but Delhi’s pollution doesn’t get better

Every winter, Delhi-NCR chokes as much on the promises to cut air pollution as on pollution itself. Year after year, as the capital city’s air turns into a toxic haze, same old pledges of clean air resurface, only to be followed by a silence and actions that make no difference. Broken promises hang as thick as the pollution itself. TOI explains why this is the case and what could make a difference for the better