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Seizures, broken spines and vomiting: Scientific testing that helped facilitate D-Day

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Seizures, broken spines and vomiting: Scientific testing that helped facilitate D-Day

An American hauls in a HA-19 Japanese submarine following the attack on Pearl Harbor in 1941. Submarine warfare would prove crucial during WWII.

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An American hauls in a HA-19 Japanese submarine following the attack on Pearl Harbor in 1941. Submarine warfare would prove crucial during WWII.

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Early on in World War II, the leaders of the Allied forces understood that the war effort would hinge on submarine warfare. Though the D-Day invasion wouldn’t take place until June 6, 1944, biomedical engineer Rachel Lance says British scientists at University College London were studying issues of submarine survival as early as 1940.

“[They] … were looking at these problems of undersea survival, of how people breathe inside enclosed spaces,” Lance says. “Eventually, that transitioned into diving and diving technologies, and all of those things together were used to scout the beaches of Normandy and facilitate the landings of D-Day.”

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Lance has conducted research for the military, using a hyperbaric chamber at Duke University in which the air and the pressure can be controlled to mimic what divers and submarines are exposed to. Her new book, Chamber Divers, is about research conducted by scientists at UCL before and during World War II — including protocols for operating the miniature submarines used on scouting missions in advance of D-Day.

“These tiny subs had a smaller gas volume, which made the rules of breathing physiology even more time critical,” Lance explains. “The scientists … did this experiment by just putting themselves in a tank, closing the door and waiting to see how long they could physically handle the amount of carbon dioxide in there before they ended up with migraines and projectile vomiting.”

Lance notes that UCL scientists subjected themselves to extremes that would be considered “wildly unethical and illegal today.” Some sustained serious injuries — including seizures and broken spines — in the hyperbaric chamber.

“One of them … dislocated her jaw five times in the same dive,” Lance says. But, she adds, “they were doing it because they were in this context of the Blitz and the bombings and the horrors of World War II happening around them.”

Interview highlights

Chamber Divers, by Rachel Lance

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Chamber Divers, by Rachel Lance

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On what inspired to her look into WWII-era underwater research

I read this paper about carbon dioxide and it wasn’t extremely exciting. It concluded, essentially, that carbon dioxide is bad for you and it hurts, which I already knew. But something about the date bothered me. It was published in 1941, which was obviously wartime, and it was published by a group of British scientists. In scientific research, the paper usually comes out about a year after the research was done. So that meant that these people were working on this question of carbon dioxide in 1940, in London. The other thing that was happening at that time period was the Blitz. So something about carbon dioxide was so critical to them that they were looking at it while they were being bombed. From there, I just kept pulling at the thread until the entire story became evident of what they were actually working on.

On WWII scientists conducting dangerous experiments on themselves in hyperbaric chambers

They put themselves in there for things that would not be legal today, if I tried to do that. Even if I had subjects who consented, I would possibly be criminally prosecuted. They were putting themselves in there and breathing pure oxygen and rocketing the chamber down as quickly as they go to see if they could kind of outrun the negative effects. They were taking some of these gasses, like oxygen, down to depths that we now know are extremely dangerous and toxic. And they were continuing to do this even after they were having severe injuries. With modern research, we have what are called serious adverse event reporting requirements. So if something bad happens in our research, we have to sit down and have a conversation about the ethics of asking people to continue. Whereas this group, because their goal was to prevent military deaths during the invasion of Normandy, they figured better we do it here in the lab.

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On blast injuries on land vs. underwater

There are two major differences. The first is that we don’t have to worry about some of the things that we do on land, such as shrapnel and burns, because the density of the water slows down a lot of those effects before they can reach more than a meter or two. The other big difference is that we have to worry a lot more about the shockwave. In air, the shockwave decreases very quickly, but in water, just like sound, it travels a lot more readily. So imagine how far we can hear whale sounds. You can hear whale sounds for miles and miles. This same type of impact, where the density of water moves these waveforms along more efficiently than in air, occurs with the shockwave from explosions. So you see different injury patterns from the underwater explosives, but most of them tend to be internal, which is kind of terrifying.

On the pressure of water

We have one atmosphere that we breathe, that atmosphere of gas we forget about pretty often, but it does sit on top of us all the time. Once we go under the water, we have additional atmospheres that essentially get piled on. So every 33 feet, or 10 meters, if you’re metric, is equal to another atmosphere of pressure. The deeper we go, the more that pressure increases simply from the weight of that water pushing down.

On why people who emerge from deep water too quickly experience the bends

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Basically, the human lungs are very weak. They’re not a strong organ. And so they’re really good at what they do in terms of processing gas, but they do it passively. So they essentially just let that gas flow come in and out of the body. What that means for breathing is that when we breathe a gas, we have to breathe the gas of the approximately same pressure as the air around us or the water around us. When you’re underwater, that means you’re breathing high-pressure gas. That means that that increased pressure can help those gasses absorb into your bodily tissues. The air around us is about 78 to 79% nitrogen. So as we’re underwater and we’re breathing that higher pressurized gas, that nitrogen and the other gasses absorb into our tissues. … With decompression sickness — the bends — that’s when we come back up … too quickly, and the nitrogen comes out, instead of harmlessly in the bloodstream processed by the lungs, it comes out as bubbles. That’s really bad. It causes all kinds of physiological issues.

Cassion workers constructing the Brooklyn Bridge, circa 1888

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Cassion workers constructing the Brooklyn Bridge, circa 1888

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On the men who died in the underwater construction of the Brooklyn Bridge

You don’t know what’s going to be a problem until somebody goes first. Those unfortunate caisson workers. They were the first ones who were really experiencing decompression sickness and experiencing how brutal and lethal that can be. … They sort of just powered through. They were having all these deaths and they just hired more workers — which is perhaps why a lot of the workers there started quitting toward the end of the project.

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But after that, it was used by the scientific and research community as an example of a thing to stop. This is kind of why a lot of us, myself included, get into science. When we see things happening, we have the drive to explore them, understand what’s happening, and then try and prevent the next case from going on.Somewhere down there are wooden caisson shells in which people worked until they literally died. I think that’s incredibly powerful in terms of remembering the context of where society comes from and how it’s been built.

Sam Briger and Thea Challoner produced and edited this interview for broadcast. Bridget Bentz, Molly Seavy-Nesper and Meghan Sullivan adapted it for the web.

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An eco-journalist takes on a Big Tech in this modern twist on the heist novel

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An eco-journalist takes on a Big Tech in this modern twist on the heist novel

George Orwell famously wrote that it takes a constant struggle to see what’s in front of one’s nose. That may be truer than ever. These days we barely register things that 20 years ago would’ve seemed downright bizarre — like people staring down at their phones in busy crosswalks. The unnatural comes to seem natural.

Until it doesn’t. This has happened with the proliferation of data centers all over America. After years of ignoring their mushrooming growth — there are over 4,000 in the U.S. — the public now sees them clearly and doesn’t like what they represent, be it soaring energy bills or the advent of job-killing AI. People now oppose having data centers in their communities. In real life — and in movies like Eddington — politicians are now pulled between their constituents’ desires and the devouring needs of Big Tech.

The hatred of data centers ignites the action in Cloudthief, a boisterous new novel that’s equal parts heist thriller and cry in the digital wilderness. It was written by novelist Nathaniel Rich, who may be best known for ecological non-fiction such as his 2019 book Losing Earth. Setting his story back in 2014 — when tech billionaires were still considered visionaries, not bullying moguls — Cloudthief centers on a brainy young man who, like the guy in the Leonard Cohen song, is just some Joseph looking for a manger.

Our narrator “Tim” — a pseudonym he says — is a freelance writer who’s gone broke doing magazine articles about climate change. He’s lonely and lost until he stumbles upon Virginia (also not her real name), who could be the American cousin of dragon-tattooed Lisbeth Salander.

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Tech-savvy and paranoid and scarily elusive, Virginia lives off the grid in a Manhattan mini-storage unit and has plans for a blow against Big Tech. Evidently, Tim has never seen a noir movie because he doesn’t merely fall for this 21st-century fantasy of a femme fatale, he dreamily goes along with her plans to rob a data center in Pryor, Okla., and make off with the sellable information their servers contain.

Once they drive off to Pryor — Rich describes their road trip wonderfully — Cloudthief kicks into high gear, serving up the juicy stuff that we all love in a heist story. We see the baroque planning. We watch them case their target, a silver-smoke spewing behemoth that has the majestic size of two futuristic airport terminals but is actually as tacky as a boondocks mini-mall.

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Apache chef Nephi Craig says cooking Native food saved his life

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Apache chef Nephi Craig says cooking Native food saved his life

Nephi Craig’s mother is White Mountain Apache and his father is Diné Navajo. He grew up on both reservations.

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Nephi Craig, the founder of the Native American Culinary Association, credits eating, cooking and teaching about Indigenous food with saving his life.

Craig became addicted to alcohol and drugs at an early age. After his first DUI, the judge gave him the option of three months’ probation if he agreed to get a job or go to college. That’s when he enrolled in cooking classes at Scottsdale Community College.

Craig says he initially felt like an “oddball” in the classes because he was unfamiliar with terms like “bistro” and “vichyssoise.” But he also credits the classes with igniting his interest in cooking — and teaching him more about Native foods, including the tomato.

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“[When] I came across this info that [the tomato] was native to the Americas, it just brought this really big smile to my face,” Craig says. “As a Native American in Arizona, you don’t really see yourself represented in really anything, let alone cookbooks and culinary school curriculum. So that was a neat point of validation for me that grew into many other interests.”

Craig eventually landed a job at one of Phoenix’s top fine dining restaurants, a goal he’d been working towards for years. But after a period of sobriety, a relapse ultimately cost him the job. He wound up in jail, where he worked in the kitchen and learned to design meals with whatever food was on hand.

“I was bunched in with the other Native Americans. And in jail, we call ourselves ‘chiefs,’” he says. “Banding together to feed, I think it was 7,800 inmates a day, was really eye-opening. It showed me that I was not above or below any style of cooking.”

Over the years, Craig completed nine rehabs and ran away from five others. Now sober, he works as the nutritional recovery program coordinator at the White Mountain Apache tribe-owned Rainbow Treatment Center in Whiteriver, Ariz., which serves people recovering from substance abuse. In 2021, he opened Café Gozhóó, a restaurant on the reservation that’s a place for the community to eat and talk. His new memoir is Our Knives Will Save Us: Dispatches from a White Mountain Apache Chef.

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Trump relished in being compared to dictators like Hitler and Stalin, journalist says

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Trump relished in being compared to dictators like Hitler and Stalin, journalist says

A gold-colored item embossed with the word “President” sits on the Resolute desk in the Oval Office of the White House on Nov. 10, 2025.

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The New York Times journalist Jonathan Swan has spent the past 11 years covering President Trump through three political campaigns, his first, and now second, term in office and the ongoing war with Iran. Swan says aside from the COVID-19 pandemic, he can’t remember a time where Trump looked “as stuck as he looks right now.”

“It’s pretty clear he realizes that this war [with Iran] has not gone well, has not played out the way that Netanyahu pitched him or that Trump himself thought [it] would play out,” Swan says. “Trump is someone who is naturally given to hubris, but I think we saw a very extreme version of that with this war.”

Swan and his co-author Maggie Haberman spoke with more than 1,000 sources for their new book, Regime Change: Inside the Imperial Presidency of Donald Trump. The book paints a picture of an unrestrained president remaking the American government and its international relations in profound ways.

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Swan notes that the president, who sat for an interview for the book, has been particularly fixated on becoming a “great man of history” during his second term. During one interview, Trump showed Swan and Haberman a document that compared him to notorious historical figures like Mao, Stalin, Hitler, Attila the Hun and Genghis Khan.

“[The list had] nothing to do with morality, all just about pure power projection. And Trump was relishing being in their company,” Swan says. “Maggie and I talked about it afterwards, and it really occurred to us that when you look at it through that lens, his second term makes a lot more sense.”

Swan says the president’s fixation on power is reflected in his decisions to go to war in Iran and implement regime change in Venezuela. But he also sees it manifested in Trump’s White House decor, which leans on what Swan calls the president’s “inner Louis XIV” style.

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