The Last Question by Isaac Asimov

I don't normally link to short stories, but I will to The Last Question by Isaac Asimov because I really liked it. It is a story about Humanitie's relationship with the universe's eventual state of entropy. It was published in 1956 which was a year before Sputnik and the year that IBM announced their first hard disk storage unit. Yet the story being written in a time when electronics used a lot of vacuum tubes, it is still very reliant and doesn't feel dated.