All the Birds in the Sky by Charlie Jane Anders is difficult to classify and has often been listed as genre-bending. One of the main character, Patricia, is a witch but the other character, Laurence, is a scientist trying to save the world from destruction.
All the Birds in the Sky contains magical realism, science fiction, and romance. A post-apocalyptic storm, artificial intelligence, and a ground-breaking project to create a wormhole give this novel an exciting edge.
Some of the themes in All the Birds in the Sky resemble the ones in Iain Pears' Arcadia--the ethical ramifications of creating a device that could repopulate the earth's inhabitants in another world.
All the Birds in the Sky, though, is more tightly focused than Arcadia. It appeals to readers in their early twenties because it has elements of what Molly Wetta calls "new adult" fiction or "twentysomething" fiction.
According to Wetta, new adult fiction follow teens "the summer after graduation, on into college, and beyond."
New adult fiction is often wildly inventive, with a focus on technology, relationships, and finding one's place in the world.
Other examples of fiction for new adults that Wetta lists are Rainbow Rowell's FanGirl and Stephanie Danler's Sweetbitter.