Jen Green Jen Green is a prolific nonfiction author who has written more than 300 titles for children and adults alike. She obtained her doctorate in English literature from Sussex University, and after spending 15 years in publishing, Green became a full-time writer. She writes on a broad array of subjects, including art, animals, and natural history. From 2012 to 2013 she was a Royal Literary Fund Fellow at the University of Sussex.