First off, I learned about the site “Letters of Note”, which is a site that collects letters from various people and then posts them for display on their website. I highly recommend subscribing to their feed since they continually put out great content.
Secondly, be sure to check their most recent post, "siseneG", a short story written by the science fiction author Arthur C. Clarke. It’s a short-short piece, but very clever in its minimalist approach to “End of the World” story. In this sub-genre of short-short stories about the end of the world it goes up there with Isaac Asimov’s “The Last Question”, which was also one of Asimov's favorites as well.