On Nadella, Walter Isaacson, a professor of history at Tulane University and a former managing editor of TIME, said growing up in India, Nadella fell in love with cricket, a sport whose grace comes from melding stars into a cohesive and harmonic team. 'Since becoming CEO of Microsoft in 2014, Nadella has used those principles to restore the company's spirit of innovation. Consider its new product strategy, which emphasizes cloud computing and allowing people to collaborate across platforms,' Isaacson said. Nadella also makes one of the six covers of TIME's 100. (Image Courtesy Twitter @satyanadella)