It's very easy to chalk up certain facets of our lives to just being "the way it's always been." From daylight savings time to time zones, most of us don't even give a second thought to the meaning ...

The massively successful 1990s Fox Television drama Beverly Hills 90210 followed the exploits of teens who were clustered in the wealthiest zip code in Southern California. It is telling that those ...

The humble ZIP Code shows up in all kinds of surprising places. Planet Money looks at how it was born, how it transformed the mail and talks to one researcher who argues that it's gone too far. The ...