After spending years building a career in Washington, DC, Sheila traded city life for one of the most unusual homes in America—a century-old lighthouse standing alone in the middle of Lake Erie.

If you were really into gift shops as a kid, you probably loved to look at all the shiny geodes. But those little geodes are nothing compared to the mother of all geodes, found is in Put In Bay, Ohio. So let's talk about how this geode formed and the gorg...