Linkfest #44: Microchimerism, Sonic-Boom Duct Tape, and the Hidden Tetris Champion (opens in new tab)

Hello there! It’s time again for "the opposite of doomscrolling” — my latest Linkfest, for which I have sifted through the entire dang Internet, top to bottom, looking for the finest items in science, culture and technology. If you’re a subscriber, thank you! If not, you can sign up here — it’s a Guardian-style, pay-whatevs-you-want affair; the folks who kick in help keep the Linkfest free for everyone else. (Full archive of issues, including this one, is online free here.) And: Please share ...