Science fiction (abbreviated SF or sci-fi with varying punctuation and case) is a broad genre of fiction that often involves sociological and technical speculations based on current or future science or technology. This is a reader-selected collection of short stories originally published between 1931 and 1963, that entered the US public domain when their copyright was not renewed. ' N, e1 J3 p( \4 ` 8 }( M$ ?6 q5 @9 a3 H6 hSummary by Cori Samuel, with Wikipedia input. / k, E$ X3 h5 x2 E& u' @" v' j; x% b/ x# D! L9 a9 j7 M3 ^6 l2 _