Harriet Ritvo is Arthur J. Conner Professor of History at MIT and author of The Platypus and the Mermaid, and Other Figments of the Classifying Imagination (1997), The Animal Estate: The English and Other Creatures in the Victorian Age (1987), The Dawn of Green: Manchester, Thirlmere, and Modern Environmentalism (2009), and Noble Cows and Hybrid Zebras: Essays on Animals and History (2010). Her current research focuses on wildness and animals. She teaches British history, environmental history, and the history of human-animal relations. She is editor of the Animals, History, Culture book series. A fellow of the American Academy of Arts & Sciences, she has received fellowships from the Guggenheim Foundation, the National Endowment for the Humanities, and the National Humanities Center.