The BBC World Service is presenting a series of three radio shows called the Bicycle Diaries. Each show is ~25 minutes long.
Show one was about the Paris bicycle lending program.
Show two is about how people use bicycles in Uganda.
I don’t know what show three is about.
The first one was pretty good, the second one is in my mp3 player waiting for me to get around to listening to it.
You can download the MP3 files, or subscribe via podcast here.