Some of the biggest names in science fiction right now — like The Martian author Andy Weir — are writing what's called hard sci-fi, based on real-world science and a vision of hope for the future.
Lolita -- the novel, not the title character -- turned 50 this past week. Wisconsin Public Radio's Steve Paulson talks with various writers about the literary influence of the Vladimir Nabokov's story of a grown man's obsession with a very young girl.