Today is the birthday of sci-fi novelist Larry Niven (born April 30, 1938). Along with Jerry Pournelle, he co-authored the survivalist classic Lucifer’s Hammer.

April 30th is also the birthday of software engineer Ed Yourdon, who was born in 1944. He passed away in 2016.

Today’s feature article was too short to qualify as an entry for Round 106 of the SurvivalBlog non-fiction writing contest.