Use of Aadhar card will be optional, Aadhar Chief has told NDTV. But petitioners say they will oppose the move tooth and nail; A new study has found that open fires of biomass are the most lethal form of air pollution followed by coal burning and farm fires; Prime Minister Narendra Modi meets key BJP leaders over dinner as the party focuses on 2019 Lok Sabha elections and votes of millennials; Chief Minister Manohar Parrikar assures that legally imported beef is welcome in Goa. But NDTV gets you first hand account of harassment on Goa-Karnataka border