Jack M. Balkin is Knight Professor of Constitutional Law and the First Amendment at Yale Law School, where he is also director of the Information Society Project. He lectures widely at universities in America and abroad, and he makes his home in New Haven, Connecticut.Eltjo Haselhoff has written the first book on crop circles based on scientific evidence. His research, as introduced in the first chapter, 'A Great But Most Tangible Mystery,' addresses some of the most concrete crop circle phenomena: the dead fly enigma, curious deposits, germination anomalies, and balls of light. Studies with mathematical formulas allow any reader to analyze and verify, or dispute, the author's findings. For those interested in a more metaphysical approach, the author provides 'The Psychic Perspective: Earth Forces, Aliens, Gate to Another World, and Messages from the Cosmos.' Diagrams and color photographs throughout the book guarantee a fascinating journey through the world of crop circles even for those not inclined toward laboratories and numbers. Eltjo Haselhoff has a Ph.D. in Theoretical and Experimental Physics. He has been examining the crop circle phenomenon for over ten years, and has personally visited hundreds of crop circles. Born and educated in the Netherlands, Dr. Haselhoff has worked at many research institutes, including Los Alamos National Laboratories. He has published dozens of articles in peer-reviewed scientific journals, such asThe Journal of Applied Physics, andThe Physical Review. His most recent article appeared in the prestigious, international scientific journal,Physiologia Plantarum.