One observation I’ve made in my years living on Earth is that nearly all humans have (or had) parents. Those parents also had parents. Indeed, for the entire history of humanity, it’s pretty much been a long series of parents and offspring. What a curious way to run a species, right? And yet many humans have only a passing awareness of their genetic lineage (and the many other people to whom they are related). One would think that is significant information. If you’re a human with insufficient knowledge of your ancestry, today’s a great day to start fixing that, whether through conventional genealogical research or by spitting into a tube, which is apparently what the cool human kids do these days.