In a world full of economics blogs, Cowen and Tabarrok's Marginal Revolution (marginalrevolution.com) ranks is one of the Web's most popular and most respected. The same qualities that make the blog so distinctive are also behind the success Modern Principles of Economics--engaging authors, unbiased presentations of essential ideas, and a knack for revealing the "invisible hand" of economics at work.  The thoroughly updated new edition of Modern Principles again draws on a wealth of captivating applications to show readers how economics shed light on business, politics, world affairs, and everyday life.