MAHAKUMBH NAGAR, Jan. 28 -- With an anticipated crowd of 8 to 10 crore (80 to 100 million) devotees on the banks of Sangam, the Mauni Amavasya snan, the second of the three Amrit snans on January 29 in Mahakumbh, is set to be the world's biggest-ever human congregation for a single event in a single day....