Original sentence: +	Dave Touretzky is a Research Professor in the Computer Science Department and the Center for the Neural Basis of Cognition at Carnegie Mellon University.-	His interest in the esoteric secrets of the Church of Scientology has resulted in various "dead agent" campaigns against him.-	The following web sites are hosted by Scientology as part of an ongoing campaign by Scientology to "expose" Professor Toruetzky's alleged crimes.He has worked as an Internet activist in favor of freedom of speech, especially what he perceives as abuse of the legal system by government and private authorities.Professor Touretzky's personal Web site: 	+	David Touretzky has homemade bomb making instructions on his personal CMU website.See also: Scientology criticism