NPR's Fresh Air program will feature Robert Sullivan, author of Rats (a book I've previously recommended). He talks about his experiences watching rat behavior in a New York alley (for a year) as well as other rat-related topics (researching extermination, the history of rats, etc.).
You can catch it today at 1pm PST on KQED with online streaming.
P.S. No, there's no April Fool's idiocy involved in this post.