This is an edition of Up for Debate, a newsletter by Conor Friedersdorf. On Wednesdays, he rounds up timely conversations and solicits reader responses to one thought-provoking question. Later, he publishes some thoughtful replies. Sign up for the newsletter here.Question of the WeekI was overwhelmed by your responses to last week’s question on cars! So for now, I’m going to hold off on a new question and promise to send out your excellent thoughts in the next newsletter.

Bad things happen to a human body in zero gravity. Just look at what happens to astronauts who spend time in orbit: Bones disintegrate. Muscles weaken. So does immunity. “When you go up into space,” says Saïd Mekari, who studies exercise physiology at the University of Sherbrooke, in Canada, “it’s an accelerated model of aging.” Earthbound experiments mimicking weightlessness have revealed similar effects.

This article was featured in One Story to Read Today, a newsletter in which our editors recommend a single must-read from The Atlantic, Monday through Friday. Sign up for it here.      Growing up in a strict household, I was taught to honor etiquette; I still call my elders “sir” and “ma’am,” and I always say thank you. But I almost never use the word please.

In the 40 years since Heartburn was published, there have been two distinct ways to read it. Nora Ephron’s 1983 novel is narrated by a food writer, Rachel Samstat, who discovers that her esteemed journalist husband is having an affair with Thelma Rice, “a fairly tall person with a neck as long as an arm and a nose as long as a thumb and you should see her legs, never mind her feet, which are sort of splayed.

This is an edition of The Atlantic Daily, a newsletter that guides you through the biggest stories of the day, helps you discover new ideas, and recommends the best in culture. Sign up for it here.A former vice president of the United States identified a sitting president as a mortal danger. In another time, it would have been the Story of the Century. Instead, it was the Kerfuffle of the Week, and it is already dissolving away in the new media cycle.

The question will be simple but perpetual: Person or machine? Every encounter with language, other than in the flesh, will now bring with it that small, consuming test. For some—teachers, professors, journalists—the question of humanity will be urgent and essential.

Updated at 2:15 p.m. ET on March 14, 2023Less than four months after releasing ChatGPT, the text-generating AI that seems to have pushed us into a science-fictional age of technology, OpenAI has unveiled a new product called GPT-4. Rumors and hype about this program have circulated for more than a year: Pundits have said that it would be unfathomably powerful, writing 60,000-word books from single prompts and producing videos out of whole cloth.

As editors who review poetry for The Atlantic, we read a lot of poems. Each week, there are new PDFs in our inboxes; our desks are covered with chaotic piles of books we’ve yet to crack open, and our shelves are already packed with old favorites. We’re also frequently asked, “What poetry should I read?” The question couldn’t be more reasonable, but embarrassingly, it tends to make our minds go blank.