In February 2012 The New York Times featured an article on a 60-person chain of kidney transplants that resulted in 30 individuals receiving donated kidneys. The article highlighted the growing demand for donated kidneys and the unique challenges of kidney transplantation. This month, Virtual Mentor's theme issue editor for March 2012, Alon Neidich, interviewed Dr. Al Roth about the growing importance of paired kidney exchanges for incompatible patient-donor pairs. Dr. Roth is the George Gund Professor of Economics and Business Administration in Department of Economics at Harvard University, and in the Harvard Business School, and is one of the founders and designers of the New England Program for Kidney Exchange.