The winners of the second edition of Tata Social Enterprise Challenge, hosted by the Tata group in partnership with the Indian Institute of Management Calcutta (IIM-C), were announced today at IIM Calcutta. The top 3 winners were MicroXlabs, Bodhi Health Care and Green Agrevolution Pvt. Ltd. winning prize money of Rs 1.75 lakh,Rs 1.25 lakh and 1 lakh, respectively.