Stephen Baxter is the pre-eminent SF writer of his generation. With Terry Pratchett he has co-authored the Long Earth novels. Published around the world he has also won major awards in the UK, US, Germany, and Japan. Born in 1957 he has degrees from Cambridge and Southampton. He lives in Northumberland with his wife.

Elizabeth Bear was the recipient of the John W. Campbell Award for Best New Writer in 2005. She has won two Hugo Awards for her short fiction, A Sturgeon Award, and the Locus Award for Best First Novel. Bear lives in Brookfield, Massachusetts.