Roadside sensors are now providing radio ratings for passing drivers in Washington, Los Angeles, Seattle, New Jersey, and Charlotte, N.C., the Washington Post reported [registration required]. The provider, Phoenix-based MobilTrak, derives listener data from tuning and sells results to retailers near the same roads, to billboard companies [earlier NYT article], as well as to radio stations.

"How can we reach kids who don't watch PBS without dumbing down to them?" WGBH tries a reality show for teenagers.

The Boston Globe profiles Zalmai Yawar, an Afghan who has worked as an interpreter for NPR and other U.S. news outlets. "Reporters kill over two things: a great driver and a great interpreter," says NPR's Jacki Lyden. "Zalmai was one of my best interpreters ever."