Coronavirus lockdown: Significant improvement in air quality across India, says CPCB

*New Delhi:* The nationwide 'Janta Curfew' on March 22 and the 21-day lockdown imposed since March 24 to combat the coronavirus outbreak have resulted in a significant improvement in air quality in the country, the Central Pollution Control Board (CPCB) has said.

Travel restrictions and closure of industries have helped reduce...