BENGALURU - Indian-origin Portugal Prime Minister Antonio Luis Santos da Costa and Indian-born US diplomat Nisha Desai Biswal are among the 30 awardees of the Pravasi Bharatiya Divas (PBD), it was announced on Monday. "Costa, Nisha and other of the diaspora have been conferred the PBD 2017 awards for their outstanding contribution in diverse fields, including public service, community service, social service, business,