Q: Passage: The Zookeeper's Wife is a non-fiction book written by the poet and naturalist Diane Ackerman. Drawing on the unpublished diary of Antonina Zabinski's, it recounts the true story of how Antonina and her husband, Jan Zabinski, director of the Warsaw Zoo, saved the lives of 300 Jews who had been imprisoned in the Warsaw Ghetto following the German invasion of Poland on September 1, 1939. The book was first published in 2007 by W.W. Norton.

Question: Based on this passage, who wrote the book the zookeeper's wife? Let's give stream of consciousness first:
To answer the above question, the relevant sentence is: The Zookeeper's Wife is a non-fiction book written by the poet and naturalist Diane Ackerman. Therefore, the final answer is Diane Ackerman.