When someone wants to make the world a better place – and actually has the means to do it – you wonder: How do they go about it? What are their guiding principles? What works and what doesn’t? In this candid and inspiring interview, Alan Alda asks Melinda Gates about her work as a philanthropist and her lifelong dedication to social change. They discuss her book, "The Moment of Lift: How Empowering Women Changes the World," and what happens when the data suggests one course of action, but the reality on the ground suggests another? Can a little more listening, especially to women, be the way to help change the world?