When we go to the doctor's office for a checkup, most of us get annoyed if we have to thumb through old waiting-room magazines for a half-hour. Yet many people wait much longer for something much more important.

Sally Satel, a researcher at The American Enterprise Institute, waited for new life in the form of a kidney transplant, until an unexpected someone stepped forward. Since giving Sally her right kidney, Virginia Postrel, former editor of Reason, has thought a lot about how to increase the supply of kidneys for people like Christina Deleon. Like 75,000 other Americans, Christina has no living donor and has no choice but to endure dialysis and wait-she's been on the list since 2003.

Postrel and UCLA's Dr. Gabriel Danovitch take on some common misconceptions about kidney donation, but they disagree sharply on the most controversial proposal-paying people to donate kidneys.

Each year more than 3,000 Americans-a figure comparable to the death tolls from the 9/11 attacks-die waiting for kidneys. Is it time to legalize the sale of kidneys?

Drew Carey investigates what could be done to end the wait for people like Christina, and give them the freedom they deserve.