Gates Foundation Co-Founder Bill Gates, Dangote Industries' CEO Aliko Dangote, PepsiCo Chairman and CEO Indra Nooyi, and Softbank Group Chairman and CEO Masayoshi Son talk with The Carlyle Group's David Rubenstein about the transformative power of technology to solve the world's biggest problems at the Bloomberg Global Business Forum, Wednesday, September 20, at The Plaza Hotel in New York City.