It's podcast goodness time! This week on the Stuff You Should Know podcast program, we covered a couple of topics dealing with women. They were pretty different, but about women all the same.Tuesday's show was on roller derby, a sport that was invented in the 1950s, died in the 1970s, 80s and 90s, and has been reborn in a big way here in the new millennium. Back in the day, it was more of an endurance competition. The inventor realized pretty quickly that people banging into one another was a little more exciting though, and roller derby evolved pretty quickly into more of a contact sport.