CURRENT AFFAIRS

Detailed explanation-1: -Of PM2. 5 pollution, 38% came from road dust, 20% to vehicles, 12% to domestic fuel burning, and 11% to industrial point sources. Of PM10 pollution, Of PM10 pollution, 56% came from road dust, 10% from concrete batching, 10% from industrial point sources, and 9% from vehicles.

Detailed explanation-2: -Air pollutants come from a variety of sources, including human-caused emissions – like fossil fuel use in vehicles and cooking – and natural sources, such as dust storms and smoke from wildfires and volcanoes.

Detailed explanation-3: -Winter months, due to lower temperatures, slow wind speed, insolation, and resultant inversion layer, are known to build up or trap pollutants leading to high pollution levels. India, and particularly northern India, has severe pollution during the winter.