Chad Orzel is a professor, blogger, and author of popular-audience books about physics. He has a BA in Physics from Williams College and a Ph.D. in Chemical Physics from the University of Maryland, College Park, where he did his thesis research in the laboratory of William D. Phillips (1997 Nobel laureate in Physics) at the National Institute of Standards and Technology, studying collisions between laser-cooled xenon atoms less than a millionth of a degree above absolute zero. He then spent two years as a post-doc at Yale University in the group of Mark Kasevich, studying quantum effects in a Bose-Einstein Condensate. In 2001 he joined the faculty of Union College in Schenectady, NY, where he is now an Associate Professor and Chair of the Department of Physics and Astronomy. Since 2002 he has run the physics weblog Uncertain Principles (http://scienceblogs.com/principles/ ), now part of the ScienceBlogs network. He lives in Niskayuna, NY with his wife, Kate Nepveu, their two children, and Emmy, the Queen of Niskayuna.