Sarah Vowell examines what happens when TV takes on a subject it really has no business exploring at all, but seems fairly obsessed with nonetheless: The Pilgrims. Sarah's most recent book is Assassination Vacation.

This American Life contributor Sarah Vowell tells the story of a mapmaker named Charles Preuss who charted the Western Territories with two of American history's legendary explorers—John Charles Fremont and Kit Carson. The maps Preuss made were best sellers and helped open the Western frontier to settlement.

Host Ira Glass talks with Jane Espenson—who's written for the TV shows Battlestar Galactica and Gilmore Girls—and with J.J. Abrams—one of the creators of the hit shows Lost, Alias, and Felicity—about how we might be in the midst of another Golden Age of television.

Host Ira Glass talks with some real-live NASA astronauts: Cady Coleman, Chris Cassidy, and Marsha Ivins. On average, NASA schedules just a couple of space missions a year.

Regular This American Life contributor Dan Savage, a syndicated sex columnist with possibly the filthiest mouth of anyone you could ever meet, finds a TV program so dirty, so weird, and so perverted that he won't let his son watch it—even though it's a kids' show, made for kids, and broadcast on a network for kids.

Every winter, some of the world's best puzzle solvers gather in Boston for the MIT mystery hunt, a competition in which teams of puzzle enthusiasts spend between 24 and 72 straight hours trying to solve what just may be the hardest recreational puzzles in the world. This American Life producer Lisa Pollak hung out with one team (named Dr. Awkward...a palindrome) as they worked towards the ultimate answer, the location of a coin, buried somewhere on the MIT campus. Check out the puzzles from that year's hunt.