Rain washed Delhi air of pollutants: Experts
The pollution readings for July 13 from 1999 to 2003 carried out by the Central Pollution Control Board (CPCB) indicate that besides nitrogen oxide, all pollutants have been showing a downward trend.
The pollution readings for July 13 from 1999 to 2003 carried out by the Central Pollution Control Board (CPCB) indicate that besides nitrogen oxide, all pollutants have been showing a downward trend.