Complex sentence: He contributed stories to "CBS Reports" during this time and served as moderator on a number of CBS series such as "Town Meeting of the World", "The Great Challenge", "Where We Stand" and "Years of Crisis".
Split into simpler sentences: He contributed stories to "CBS Reports" during this time and served as moderator on a number of CBS series. Those include, "Town Meeting of the World", "The Great Challenge", "Where We Stand" and "Years of Crisis".