For one thing, there’s some adventurous detective work to do that will take them from coach to coach; for another, there’s plenty to enjoy on each of the continents of our planet. Whether they are learning about nature, cities or animals, their trips will be the very opposite of boring. With the books of the “Train of Adventure” series, they won’t want any journey to end. Is that the guard’s whistle we hear? All aboard! The express is about to leave.