Bert Hoelldobler is Foundation Professor at Arizona State University and the recipient of numerous awards, including the Pulitzer Prize and the Gottfried Wilhelm Leibniz Prize. He lives in Arizona and Germany. Edward O. Wilson is widely recognized as one of the world's preeminent biologists and naturalists. The author of more than thirty books, including Half-Earth, The Social Conquest of Earth, The Meaning of Human Existence, and Letters to a Young Scientist, Wilson is a professor emeritus at Harvard University. The winner of two Pulitzer Prizes, he lives with his wife, Irene Wilson, in Lexington, Massachusetts.