Short Wave

Every year, millions of people in the United States develop PTSD from a traumatic event—like a car crash, an assault or freak accident. A lot of those people end up in the ER answering the same question: “What brought you to the emergency department today?” Now, a research team in New York has an AI model that can use patients’ answers and demographics to spit out one number that tells medical staff how likely a patient is to develop PTSD a month later.

The work – published in the journal Nature Communications – could help an often-overloaded emergency department team prevent mental health disorders before they start. 

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Reversing aging may sound like science fiction, but scientists have already found a way to do it—at least, theoretically. Based on a 2012 Nobel-prize winning discovery, researchers are testing whether they can revert diseased cells in the eye back to young and healthy ones. They gave people a drug this year. If it works, it’ll open the door to curing and possibly preventing other age-related diseases. And that led producer Berly McCoy to wonder: Could all this research eventually extend our human lifespans? 

If you like this episode, check out our episodes on zombie cells, why our hair turns gray and why we die.

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Peru’s anchovy industry, the largest single-species fishery in the world, is being rocked by the ongoing El Niño . It’s not the first time the fishery has been impacted by the natural weather phenomenon — El Niño gets its name from Peruvian fishermen. And it’s a stark reminder of the reverberating economic consequences of El Niño events, which can cost the global economy trillions of dollars. 

Interested in more news and weather-related science? Email us your question at [email protected].

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The explosion of GLP-1 drugs has created a gray zone for pregnancy. That recently prompted the American College of Obstetricians and Gynecologists to issue its first ever guidance on the topic. In a twist, the drugs may boost fertility for some, leading to more pregnancies – a phenomenon known on social media as “Ozempic babies”. But doctors caution against using the drugs during pregnancy itself. In fact, the more we looked into this story, the more twists and nuances we found. So, we brought Dr. Amy Valent of Oregon Health and Science University onto the show to break down the latest on what’s known about how these drugs affect fertility and pregnancy. 

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Famously, polls got the 2016 election wrong. And they’d been off for multiple elections since. So, Monday night, political scientist Jack Rametta nervously refreshed his Senate forecasting model for the final time. Would it be right this time? Or would it yet again cast doubt on whether modeling, statistics and forecasting can still help us understand what motivates people to vote? Now that the results are in, so is Jack – to tell us how he did, and what his and other researchers’ predictions tell us about the evolving science of polling and forecasting.

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Math has created some of humanity's oldest intellectual challenges. And AI is completely changing the game. This year AI solved one of math’s most difficult problems. Since then, OpenAI published hundreds of new math results. So is this the end for the people who’ve dedicated their careers to pushing forward math? We get into it with NPR science correspondent Geoff Brumfel, who weighs the risks and rewards of AI’s math takeover.

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Check out NPR’s newest podcast, Machine Gods. It’s the official podcast of the singularity, meaning — the hypothetical future when machines will outpace our own intelligence…and our control. Whether you think that future is coming or not, hosts Kevin Roose and Casey Newton are here to help you understand the people trying to build it… and how their technology works. 

On this episode, listen to their exclusive interview with safety researchers who were fired by OpenAI. 

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Does swinging a lightsaber help us learn? New research from Florida Atlantic University and Brown University found that movement dramatically helps with certain kinds of complex learning. The research was published in the journal Science Advances. 

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If you’ve ever seen a crime show, you probably know how the plot unfolds: A victim is found, an investigation ensues and police conduct a high-stakes search for the culprit. Detectives and crime lab techs collect hair, examine bullet casings and photograph bloodstains. But just how reliable are these clues – and does science back them up? Well, today on the show, with the help of legal expert Chris Fabricant, we’re diving into which of these forensic techniques are junk “science”, which we should be more cautious about – and why all of them haunt the legal system.

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It’s been just over two years since the rise of Make America Healthy Again, or MAHA. The movement united a coalition of moms, wellness influencers and voters across the political spectrum over concerns about chronic illness and childhood diseases. And when Robert F. Kennedy Jr. took over as Secretary of Health and Human Services, it seemed like MAHA would be front and center in Washington.

But as we approach the midterm elections, has the Trump administration made good on the MAHA agenda? On today’s episode, we dig into what’s changed, what hasn’t and what that means for your health.

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