When Luke Davies was 11 years old in Australia, his family moved from the boring suburbs to an incredibly fun place: a tourist park full of attractions, where his dad had gotten a job. There, he was considered kind of a wimpy kid, until he got his chance to save the day.

Host Ira Glass talks to Rob Lamberts, a doctor and blogger in Georgia, who describes the crazy world of medical billing, where armies of coders use several contradictory different systems of codes...and none of it makes us healthier.

Former Bush Administration official David Frum explains a very surprising fact about Bush's economic failure, as it relates to health care. Frum is a regular contributor to the radio show Marketplace.

This American Life Senior Producer Julie Snyder talks to Ira about her rather alarming theory regarding the new president's smoking habits.

Measles cases are higher in the U.S. than they've been in a decade, mostly because more and more nervous parents are refusing to vaccinate their kids. Contributing Editor Susan Burton tells the story of what happened recently in San Diego, when an unvaccinated 7-year-old boy returned home from a trip to Switzerland, bringing with him the measles.

Host Ira Glass talks about his fear of sleep, and reports on other people who have very strong reasons of their own to fear bedtime. We also hear the sounds of troubled sleepers from a video put together by Doctors Carlos Schenck and Mark Mahowald of the Minnesota Regional Sleep Disorders Center.

When Amy Silverman's daughter was born with Down syndrome, she followed the advice of all the parents she met: She signed her daughter up for "early intervention" therapy. But her daughter's progress had unexpected consequences, forcing Amy to make a choice she'd never predicted.

A woman's elderly father has several hired caretakers who help him throughout the day. When one of the caretakers accuses another one of stealing from father, it's up to his daughter to figure out the truth.

Chaya Lipschutz, an Orthodox Jewish woman from Brooklyn, donated her kidney to a stranger. After that, she decided to spend all her time trying to match up potential donors with kidney patients.

When Sarah was 10 years old, she got a heart transplant. Soon after, her mother decided to find out more about the person who saved her daughter's life.