Ten-year-old twins, Zeb and Deb, adore seeing the world with their travel-writing dad. Where are they going this time? The homeschooled fourth graders will cruise to South America. What will they see on this journey? They will visit two reserves for thousands of Magellanic Penguins. The first one is located in Argentina. It is called Punta Tombo. The second one is located in Chile on a lighthouse-topped island in the middle of the Strait...