S. D. Unwin started out as a theoretical physicist researching quantum fields and gravity, later turning his mathematical skills to analyzing and communicating catastrophic risk, from nuclear accidents to climate change. He settled happily on writing science fiction and One Second Per Second is his debut novel.
P. J. Ochlan, an Audie Award-winning and multiple AudioFile Earphones Award-winning narrator, has recorded hundreds of audiobooks. His acting career spans more than thirty years and has also included Broadway, the New York Shakespeare Festival, critically acclaimed feature films, and regular roles in television series.