Nobel Laureate Alvin Roth of Stanford University talks with EconTalk host Russ Roberts about his work on matching markets. Examples include marriage, matching kidney donors to kidney recipients, and students to schools in cities that allow choice in their public school systems. Roth also discusses repugnance--the unease some people have with allowing buying and selling of some goods and what it's like to watch a kidney transplant knowing your research has helped make the surgery possible.