He has authored ten books, numerous short stories and poems, as well as literary criticism, opinion, journalism, and reviews.
His work has appeared several times in Gardner Dozois' The Year's Best Science Fiction anthologies.
[citation needed] He was a lecturer in science fiction as literature, screenplays, and graduate writing workshops at the University of Texas at Dallas from 2006 to 2011.
[4] Of Metaplanetary, the Publishers Weekly review stated "Daniel seems to want to create an epic vision of humanity.
"[5] Kirkus Reviews held a similar view, writing "Vast, intricate, fizzing with wit, and bulging with utterly fascinating ideas.