If you want to understand the work of Alvin Roth, of Harvard and Stanford, and Lloyd Shapley of U.C.L.A., who share this year's Nobel Prize in economics for their work on markets and matching theory and specifically, "for the theory of stable allocations and the practice of market design" watch Roth's 2007 Google Tech Talk here:
In it, he touches on, among other things, why eating horse meat in California is illegal (but eating cockroaches isn't) as well as his pioneering work as a founder of The New England Program for Kidney Exchange, a registry and matching system that helps connect compatible kidney donors and recipients.
On his blog, Market Design today, Roth notes that blogging may be temporarily delayed: "Count me as surprised..."
This program aired on October 15, 2012. The audio for this program is not available.