An unabridged collection spotlighting the best hard science fiction stories published in 2019 by current and emerging masters of the genre, edited by Allan Kaster. A coastal restoration researcher can help the police solve a murder but is conflicted over the unjust nature of the criminal justice system in "Soft Edges," by Elizabeth Bear. In "By the Warmth of Their Calculus," by Tobias S. Buckell, the captain of a dustship musters her crew to escape...