Rejuvenation of the Yamuna River has been a long-standing promise. However, as Delhi stayed indoors during the lockdown, the river seemed to look cleaner. In this episode, Mint journalist @pretikakhanna speaks to Dr. Suresh Kumar Rohilla who is the Programme Director for Water Programme at the Centre for Science and Environment (CSE) on the untreated waste that goes into the river and the rejuvenation process.