Elie Dolgin in Nature:
RNA-based vaccines were the heroes of the COVID-19 pandemic. They set records for the highest-grossing drug launches in history, and their development was recognized in this year’s Nobel Prize in Physiology or Medicine. But it was long known that this technology had a key shortcoming: RNA, in its usual linear form, is short-lived. Within hours, enzymes in cells descend on the molecule, chewing it to pieces. RNA’s fleeting nature isn’t a big problem for a vaccine: it needs to encode proteins only for a short time to trigger an immune response. But for most therapeutic applications, it would be much better to have RNA that could stick around for longer.
That’s where circular RNAs, or circRNAs, come in. Tie the ends of an RNA transcript together, and many RNA-munching enzymes have nothing to sink their teeth into. As a ring, RNA gains stability and longevity that, in theory, could increase its therapeutic potential, even at low dose levels. “With a single delivery, you can get quite durable protein production,” says Howard Chang, a molecular geneticist at Stanford University School of Medicine in California and a scientific co-founder of Orbital Therapeutics in Cambridge, Massachusetts — one of the dozen or more biotechnology firms that are now pursuing therapeutics based on engineered circular RNA. These biotech firms have collectively raised well in excess of US$1 billion in venture-capital funding over the past three years, and many big pharmaceutical companies are now dabbling in the technology as well. They are driven by the belief that whatever linear RNA can do, its more resilient circular counterpart can do better.
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In 1751, the engraver and satirist William Hogarth created Gin Lane, his celebrated visual retrospective about the devastating effects of this newfangled spirit on the lives of London’s poor. The print, a companion piece to Beer Street, offers a harrowing panorama of poverty, addiction, insanity, violence, infanticide, and suicide; the only people and institutions who thrive amongst the mayhem and despair are an undertaker, “Gripe” the pawnbroker, and the two purveyors of the “deadly draught”: a cellar gin shop and “Kilman” the distiller. In the words of Hogarth’s most recent biographer, Gin Lane’s “racked scene of dissolution
One summer’s day in 1976, the philosopher
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Katalin Karikó and Drew Weissman, who together identified a chemical tweak to messenger RNA, were awarded the Nobel Prize in Physiology or Medicine on Monday. Their work enabled potent Covid vaccines to be made in less than a year, averting tens of millions of deaths and helping the world recover from the worst pandemic in a century.
In 2019, the literary magazine NOON published a story by Lydia Davis called “The Language of Armagnac,” a quietly comic meditation on the difficulties of translating “the patois of the city of Auch, which is a local form of the language of Gascon, which is in turn a dialect language of Occitan.” A second version of the story much like the first was included in Davis’s “Essays Two,” a collection of her writings on translation, a career that parallels her work as a writer of fiction. A third and notably different version appears in her story collection “Our Strangers,” under the title “Bothered Scholar on Train.” It refashions Davis’s elaborate philological commentaries as the tirade of a scholar whose attempt to read in the language of Armagnac is disrupted by noisy passengers. Davis designed the story to open with an exclamation—“Oh, can’t you quiet down, please!”—and end with an exclamation mark, too (“So, please!”). This symmetry would clue readers in to an irony underlying the scene. The bothered shouts at others to be quiet. He—or she—annoys strangers while insisting that they are the annoying ones.
‘We’re getting no support on this national crisis,’ Mayor Eric Adams said in September at a town-hall-style gathering on Manhattan’s Upper West Side. He was talking about the influx of transnational migrants who have landed in the city’s shelter system: more than 118,000 since the spring of last year, with about 10,000 more arriving each month. There are now about 115,000 people in the city’s care, and more than half of them are migrants. In August, the city projected that it would spend $5 billion caring for migrants during this fiscal year.
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This varies by pathogen and is known as a microbe’s “infectious dose.” Usually it takes quite a few, but some microbes require an incredibly small number of organisms to start an infection. Take norovirus for example, the stomach bug notorious for spreading whenever people are in close contact and touch the same surfaces, such as on
Birds dip between low branches that hang over glittering brooks along the drive from Jalalabad heading south toward the Achin district of Afghanistan’s Nangarhar province. Then, the landscape changes, as lush fields give way to barren land.
Flamboyant, swashbuckling cross-dressing was nothing new in late nineteenth-century France. Paris’s unique and bohemian lesbian subculture