Adar Poonawalla

There is an art to ­sitting on a throne. Adar Poonawalla, 36, started working for the Serum Institute of India, the vaccine and drug ­manufacturing empire of his father Cyrus, at 20. Now, he has also built up a magnificent European art collection. But this is no idle grabber of exp­ensive canvases—his Rs 100 crore clean city initiative in Pune was lauded by the PM. Fittingly, he is now a Swachh Bharat amb­­assador. That’s a squ­eaky clean profile!

Photograph by Getty Images