Recreations, his column which appeared in Scientific American for more than eight years. He has been an Associate Professor of Computer Science at the University of Western Ontario in Canada since 1968, and is president of Turing Omnibus, Inc. Among his many books on computer science, science and mathematics are Two Hundred Percent of Nothing (1993), an effort to expose abuses of math and statistics in everyday life and its companion work, Yes, We Have No Neutrons (1997). Dewdney is also interested in growing and distributing rare native trees, as manifested in his book, Hungry Hollow: The Story of a Natural Place (1998). Hungry Hollow examines the elements of a natural habitat in both time and space.