From Buffett to Bono, how todayâ€™s leading philanthropists are revolutionizing the field, using new methods to have a vastly greater impact on the world.For philanthropists of the past, charity was often a matter of simply giving money away. For the philanthrocapitalistsâ€”the new generation of billionaires who are reshaping the way they giveâ€”itâ€™s like business. Largely trained in the corporate world, these â€śsocial investorsâ€ť are using big-business-style strategies and expecting results and accountability to match. Bill Gates, the worldâ€™s richest man, is leading the way: he has promised his entire fortune to finding a cure for the diseases that kill millions of children in the poorest countries in the world. In Philanthrocapitalism, Matthew Bishop and Michael Green examine this new movement and its implications. Proceeding from interviews with some of the most powerful people on the planetâ€”including Gates, Bill Clinton, Warren Buffett, Oprah Winfrey, and Bono, among othersâ€”they show how a web of wealthy, motivated donors has set out to change the world.