Paul Doherty graduated from the Massachusetts Institute of Technology with a PhD in physics. He was a tenured professor of physics for twelve years at Oakland University, Michigan, where he taught courses ranging from physics, astronomy, and geology to electronics, computer programming, and meteorology. In 1986 he came to the Exploratorium Teacher Institute, where he develops and teaches workshops and publishes them on his web page. He is the author of many books, including the Explorabook, The Exploratorium Science Snackbook, the Klutz Book of Magnetic Magic, Color of Nature, and Traces of Time. Paul was given the Faraday Science Communicator award by the NSTA and chosen as the “Best Science Demonstrator” at the World Congress of Museums in Helsinki in 1996. He plays music on the whirly—a corrugated plastic tube. He is also a rock climber, and has climbed the face of El Capitan as well as making the first ascent of a 20,000-foot peak in the Sierra Nevada de Lagunas Bravas in the Andes.