Dr Anirban Sen, an environmental scientist, said, "With the help of sustainable measures, the air pollution crisis in Kolkata" can be tackled. The factors behind the rising air pollution include vehicle emissions, the burning of biomass, and construction activities. Furthermore, the Chhitaranjan National Cancer Institute (CNCI) and Central Pollution Control Board (CPCB), reported 70% of respiratory diseases are caused by air pollution in Kolkata.