- Water Is Life: The Hydropolitics of Water (1994)
Fiction Books:
A trilogy comprising:
- Star-Crossed: Book 1 of The Outriders (2011)
- Star-born: Book 2 of The Outriders (2013)
- Starborne: Book 3 of The Outriders (2014)
- The Stars Have No Mercy (2015)
- Empire of Ice (2016)
- City of Fire (2018)
As Co-Author:
- Into the Night: A Night Flyer Novella (2015, co-authored with Michael R. Underwood)
- The Night Flyer (2017, co-authored with Michael R. Underwood)