In the not too distant future, a cascading ecological apocalypse has ended all food production. Humanity is down to stored rations, and there is no future. Mathematician Valentina Lidova is recruited to a remote research facility, where scientists are attempting practical time travel into the past, with a twist.
Mr. Reynolds’s fluid style makes the narrative of this bleak novella shine despite the grim setting and themes. The concept of inertia as history is changed, as well as the fact that characters’ memories are altered mid-paragraph due to chances, makes things potentially quite confusing for the reader, but that is not a problem here.