How many ancestors do you have? This article is a delightful excursion into math and biology.
I’m always fascinated to hear people over-focused on only that one twig of their family that carries their surname. Too bad we can put a button to see everyone related to us glow, the glow brighter based on how closely they are related to us. Would anyone NOT glow? Maybe such a fantasy device would make us less likely to start wars.