Separating Sci-Fi from Fantasy Fiction

The popularity of sci-fi and fantasy books is growing phenomenally. New Hampshire authors Debra Doyle and James Macdonald are a part of that growth. He's a former Navy officer, she holds a Ph. D. in literature, and together they put their credentials to good use in Land of Mist and Snow. We're going to put their alternate Civil War history under the magnifying glass and discuss the fine line between fantasy and science fiction.