Jonathan Balcombe is the director of animal sentience at the Humane Society Institute for Science and Policy and the author of Second Nature and Pleasurable Kingdom. A popular commentator, he has appeared on The Diane Rehm Show, the BBC, and the National Geographic Channel, and in several documentaries, and is a contributor of features and opinions to The New York Times, The Washington Post, The Wall Street Journal, Nature, and other publications. He lives in Maryland.