Faint Echoes, Distant Stars: The Science and Politics of Finding Life Beyond Earth (Unabridged)
2010
Gateways: Original New Stories Inspired by Frederik Pohl (Unabridged)
2025
Orion: Orion Series, Book 1 (Unabridged)
2010
Orion and King Arthur (Unabridged)
2011
Vengeance of Orion: Orion Series, Book 2 (Unabridged)
2010
Immortality: How Science is Extending Your Life Span and Changing the World (Unabridged)
2010