The world's economic superpowers are preparing to meet — will they devise a fix for the financial mess?

On March 13, financial ministers and central bankers of the world's economic superpowers will meet in London to lay the groundwork for next month's crucial meeting of their country's leaders, known as the G20. Will their work revolutionize the global economy and lift us out of this economic hole, or will politics get in the way? David Brancaccio interviews Kenneth Rogoff, Harvard economics professor and former chief economist of the International Monetary Fund, about how high we should raise our hopes and what's at stake for America and the world.