David Stephenson is a space physicist who came to Canada in 1970 and studied the aurora and winds in the high atmosphere at the University of Saskatchewan. In 1979 he moved to Germany to build systems for a deep space probe. When the project was cancelled he spent a year as a consultant to Lloyd's space insurance in London before returning to join the Geological Survey of Canada. When the government sent his file to the 'downsized drawer' in 1996 he moved to the village of Merrickville near Ottawa. He is now occasionally contracted by a hi tech company in Ottawa.

His publications include twenty reviewed papers, editorials in the Interdisciplinary Science Reviews, various articles and reports and the 'Ulysses Speaks' satirical column in "Canadian Research." He has been a guest panelist and lecturer at science fiction conventions for over 20 years.

Examples of his previous presentations can be viewed at: www.ncf.ca/~ah728