While some novels start out as short stories or novellas, the switch typically happens as these tales are being written. No one ever gets to read the original short story or novella, and a completed version of the story may not even exist in this form. But Nancy Kress’ new sci-fi series, which kicks off with the novel Tomorrow’s Kin (hardcover, digital), has taken a different path. It started off as a novella, Yesterday’s Kin, which not only came out three years ago, but it’s still available wherever you buy fine books. Or fun ones. Though in talking to Kress about this, she admitted that this wasn’t part of some master plan three years in the making.