Jacqueline Novogratz speaks to MIT students about her work in creating the Acumen Fund, a non-profit global venture fund that uses entrepreneurial approaches to solve the problems of global poverty.  Jacqueline Novogratz is the CEO of Acumen Fund and author of the recently published book, The Blue Sweater, which tells her story leaving a career in international banking to spend her life on a quest to understand global poverty and find powerful new ways of tackling it.