It’s About The Evidence. Paper presented at the Biennial History of Astronomy Workshop at the University of Notre Dame, July 8-12, 2009.

Quotations To Consider In The Debate About Active Seti, Assembled by Michael Michaud for a meeting of the International Academy of Astronautics SETI Study Group in September 2006.

Long-Term Perspectives On Interstellar Flight, Paper presented at the 100 Year Starship Study Public Symposium, September 30-October 2, 2011