1. "The Book of Elsewhere" is a new science fiction anthology edited by Keanu Reeves and China Miéville, published by Del Rey. The anthology features stories that explore the concept of "elsewhere," delving into themes of alternate realities, parallel universes, and the exploration of the unknown. The book brings together a diverse range of authors, each offering a unique perspective on the idea of "elsewhere" and the possibilities it presents.

2. The article provides a review of the anthology, highlighting the strengths and weaknesses of the collection. The reviewer, JJ Charlesworth, notes that the stories in the anthology vary in quality, with some being more engaging and thought-provoking than others. However, Charlesworth praises the overall concept of the anthology, which he sees as a compelling exploration of the human desire to discover and experience the unknown.

3. The review also discusses the significance of Keanu Reeves' involvement in the project, noting that the actor's interest in science fiction and speculative fiction has been well-documented. Charlesworth suggests that Reeves' participation in the anthology may help to bring more attention to the genre and potentially introduce new readers to the world of science fiction.