CBS has renewed "Under the Dome," the summers most watched series in viewers and key sales demos, for a second season. Based on the Stephen King novel of the same name, "Dome" follows a small town suddenly sealed off from the rest of the world by an enormous transparent dome. The citizens must now deal with ways to survive amid post-apocalyptic conditions, while seeking to find answers to what the dome is and why they're all stuck in it and when they might get out (not likely anytime soon with the renewal).