- "Energy & Humanity: Solar, Nuclear, Fossil" (1988)
- "The Last Nuke" (1994)
- "The Manhattan Project - Now in Color" (1995)
- "Technology Today: Science/Environment/Communications/Energy" (1995)
- "Beyond: Mars and Beyond" (2003)
- "We Could Live There" (2012)
- "Mars Moon Colony" (2013)
- "Lunar Colony: A Base for Mars Missions" (2014)
- "The Future Is Here" (2020)
Essays and Articles
- "A Proposal for a Commercial Lunar Transportation System" (1989)
- "Project Orion: Nuclear Pulse Propulsion" (1991)
- "The New Space Race" (1992)
- "Nuclear Power for Space Exploration" (1993)
- "The Case for a Lunar Base" (1994)
- "The Future of Space Exploration" (1996)
- "The Moon: A Vital Stepping Stone to Mars" (1998)
- "Mars Direct: A Cheaper, Faster, and More Realistic Way to Mars" (1998)
- "Project Orion: A Case for Nuclear Pulse Propulsion" (2000)
- "The Nuclear Option for Space Exploration" (2002)
- "The Case for a Mars Moon Colony" (2004)
- "We Could Live There: Insights into the Design and Sustainability of a Human Settlement on Mars" (2014)
- "The Future of Human Spaceflight" (2016)
- "The Importance of Space Exploration" (2018)
- "The Future of Lunar Exploration" (2020)
Presentations and Speeches
- "The Last Nuke" (American Nuclear Society, 1994)
- "The Future of Space Exploration" (American Astronautical Society, 1996)
- "The Moon: A Vital Stepping Stone to Mars" (International Astronautical Congress, 1998)
- "Mars Direct: A Cheaper, Faster, and More Realistic Way to Mars" (International Astronautical Congress, 1998)
- "Project Orion: A Case for Nuclear Pulse Propulsion" (International Astronautical Congress, 2000)
- "The Nuclear Option for Space Exploration" (International Astronautical Congress, 2002)
- "The Case for a Mars Moon Colony" (International Astronautical Congress, 2004)
- "The Future of Human Spaceflight" (American Astronautical Society, 2016)
- "The Importance of Space Exploration" (American Astronautical Society, 2018)
- "The Future of Lunar Exploration" (American Astronautical Society, 2020)