Pallavi Pant, researcher at the University of Massachusetts, Amherst (USA) who studies air pollution in India explains that “As the central and state governments announce initiatives for pollution control, it is important to consider other sources that also contribute to air pollution. Beyond vehicles, sources of particulate matter include dust (construction dust, non-exhaust vehicular emissions- tyre and brake wear, etc.), waste burning, coal combustion, biomass (firewood, cow dung cakes etc.), brick kilns and industrial activities among others. Activities such as festive fireworks and wood burning (particularly around Diwali, Lohri) and funeral pyres can also lead to bad quality air…” The Quint. Read it on delhiair.org.