Ramalinga Raju built an emergency healthcare provider called EMRI in Andhra Pradesh, starting in his home state. He had a passion for astronomy and spent Rs. 15 million on a private night sky observatory outside Secunderabad with a 14-inch telescope and other equipment. He would take his family there on weekends. EMRI was later established in 2005 as a world class emergency management organization that handled 50,000 calls daily with 600 ambulances, some equipped with GPS, which an American expert described as a 'modern marvel'.

1. Shashikant S Kulkarni