The economist Paul Samuelson once wrote, “I don't care who writes a nation's laws—or crafts its advanced treaties—if I can write its economics textbooks.”
What a pleasure to learn that an insurgent team of economists, The Core Project, is about to rewrite the nation’s laws. The new introductory economics textbook is called The Economy. It is surely the most daring, cosmopolitan and empirically driven textbook since Samuelson’s tome was unleashed on undergraduates in 1948. It is also packed with innovations worthy of our digital age. The Core Project’s sardonic tagline says it well: “Teaching economics as if the last three decades had happened.” 
This is not your grandfather’s econ textbook. Nor is it an exercise in ideological spin or neoliberal bashing. In both style and substance, Core-Econ (the name for the Core Project's website) shakes off the dreary norms of conventional economics and embraces the critical intelligence of the real world.
Savor the delicious paradox that The Economy is published as an interactive ebook available for free downloads (pdfs) and printing. It is published under a Creative Commons Attribution, NonCommercial, NoDerivatives license, demonstrating that a free lunch is entirely feasible (at least for non-rival goods like books).
So far, ten of the twenty-one planned teaching modules have been published online; the remaining ten modules are expected to be completed by the end of 2014. At the moment, the online version is available as a “beta” release, which means that anyone can submit feedback and suggestions to improve the text before its release.