Talking Headways Podcast, Episode 4: Car Brain

In this week's podcast, Jeff and I discuss the impressive turnout -- and possible pitfalls -- of London's "die-in" demonstration for bike safety. We try to contain our envy (but not our amazement) at Paul Salopek's seven-year walk tracing the path of Homo sapiens from the Rift Valley to Tierra del Fuego. And we discuss why even passionate transit advocates know what it means to be embarrassed about taking the bus.

Thanks to pressure from our loyal readers (and some extra hand-holding from Tim Halbur) we are now (almost) available on iTunes! Which is to say, iTunes has approved the podcast but it seems it'll still be a day or two before it's searchable. If you've been following us on Soundcloud, you might want to switch over.

So please join us for our fourth episode -- the Car Brain edition. As always, please join the conversation in the comments.