Alan Greenspan

Serving under four Presidents from both parties, Alan Greenspan holds the title as the second-longest serving Federal Reserve chairman, overseeing America's economy through booms and busts from the 1980s through the 2000s. Greenspan has a new book out now called "Capitalism in America: A History," which he co-wrote with Financial Times reporter Adrian Wooldridge. See omnystudio.com/listener for privacy information.