Who turned Delhi into a gas chamber? | Namaste Bharat

According to SAFAR (System of Air Quality and Weather Forecasting And Research) India, the Air Quality Index (AQI) docked at 412 in Delhi which falls in the "very severe" category. 
Environmental experts say that stubble burning is the biggest reason for the haze that has enveloped Delhi-NCR since the last few days. Major pollutants PM 2.5 at 487 and PM 10 at 467, in 'severe' category, according to the National Air Quality Index (NAQI) data.