New Delhi, Dec. 22 -- Union Environment Minister Bhupender Yadav said that air pollution in Delhi-NCR is primarily caused by two key parameters--PM2.5 and PM10--with emissions from vehicles, industries, construction dust, and adverse meteorological conditions playing a major role. In an exclusive interview with ANI, Yadav explained that PM2.5 pollution increases due to higher carbon emissions, as micro-particles containing ozone, lead, carbon and sulphur enter the air because of industrial activity, vehicular emissions and other human activities.

"Then in PM10, dust and its larger particles are involved. When these mix and meteorological conditions worsen, the situation becomes more serious. When the wind stops blowing, and continuous em...