Complex sentence: As an author, Simon Winchester has written or contributed to over a dozen nonfiction books and authored one novel and his articles appear in several travel publications including "Condé Nast Traveler", "Smithsonian Magazine", and "National Geographic".
Split into simpler sentences: As an author, Simon Winchester has written or contributed to over a dozen nonfiction books and written one novel. Currently, Winchester contributes to several travel publications including "Condé Nast Traveler", "Smithsonian Magazine", and "National Geographic".