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Short Wave

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New discoveries, everyday mysteries, and the science behind the headlines — in just under 15 minutes. It's science for everyone, using a lot of creativity and a little humor. Join hosts Emily Kwong and Regina Barber for science on a different wavelength.

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#1554
Friday · 14 min
The latest on AI panic — and whether it's justified
AI is in the news again – for its potential to end civilization. A researcher at Anthropic resigned very publicly last week, citing concerns about the accelerating capabilities of AI and what he called “irresponsible” behavior from major AI companies Anthropic and OpenAI. Following his resignation, the leaders of both companies called for an internationally cooperative, industry-wide slowdown on advanced AI development. And Wednesday, OpenAI disclosed six more incidents of “unexpected or concerning model behavior” and debuted a new framework for reporting misalignments. So, given all these events, how worried should we be about the future of AI? And what safety measures are – or could be – set in place to safeguard humanity? NPR’s power and policy reporter Huo Jingnan reports. Interested in more science and technology news? Email us your question at shortwave@npr.org. Support public media with NPR+ and enjoy perks for over 25 podcasts like this one. This show’s perks include sponsor-free listening. Learn more at plus.npr.org. See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences. NPR Privacy Policy
Wednesday · 13 min
When batteries get a facelift, so does renewable energy
For years, renewable energy companies have faced a problem: How to store the mass amounts of energy they produce for later use. Batteries may be just the solution. In California, there's now enough grid-scale battery storage to power millions of homes for a few hours. Battery power is often the second largest source of energy on a given day in the state. So, we're revisiting the fast-growing technology with Cooper Katz McKim, a producer on The Indicator from Planet Money. Listen to the three-part battery series. Have questions about the future of energy? Contact us at shortwave@npr.org. Support public media with NPR+ and enjoy perks for over 25 podcasts like this one. This show’s perks include sponsor-free listening. Learn more at plus.npr.org. See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences. NPR Privacy Policy
Tuesday · 13 min
Why you'll probably be misdiagnosed in your lifetime
Nearly every person will experience at least one diagnostic error in their lifetime. That means either a delayed diagnosis, a wrong diagnosis – or no diagnosis at all. That’s according to a report by the National Academies of Sciences, Engineering and Medicine from 2015 on diagnostic error. Today on the show we talk to a physician who was personally affected by the crisis, and New York Times editor and author of the book The Elusive Body: Patients, Doctors and the Diagnosis Crisis. If you liked this episode, check out these other episodes: - How science is taking tripping mainstream - What If You Took The "Trip" Out Of Ketamine? - Could Psychedelics Become Tripless? - The Reality Of OCD Interested in more medical science? Email us your question at shortwave@npr.org. Support public media with NPR+ and enjoy perks for over 25 podcasts like this one. This show’s perks include sponsor-free listening. Learn more at plus.npr.org. See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences. NPR Privacy Policy
Monday · 13 min
Should race affect BMI guidelines? Doctors are split
BMI is a quick, cheap way for doctors to estimate body fat and screen for conditions like heart disease and diabetes. But medicine has long known that BMI is problematic and unnuanced. By using it, groups of people have fallen through the cracks and conditions have been caught late. So, some doctors want to add nuance – to consider race when using BMI. But using race in medicine comes with its own problems. So what’s the way forward? To find out, we talk to Katie Wu, a science writer at The Atlantic. Read more of Katie’s reporting on BMI and race. Interested in more science health stories? Email us your question at shortwave@npr.org. Support public media with NPR+ and enjoy perks for over 25 podcasts like this one. This show’s perks include sponsor-free listening. Learn more at plus.npr.org. See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences. NPR Privacy Policy
#1550
September 11 · 13 min
How scientists discovered that animals are doctors, too
When people are sick, we seek out medications and treatments to help heal. For a long time, scientists thought that was a uniquely human ability. But it turns out, many other animals do a version of it too! And since the late 1980s, western researchers have been trying to get a peek behind the curtain. And aside from just cataloguing all the cool examples just to know, there’s a real hope that studying animals’ medical cabinets may be the most promising way to expand our own. We get into the weeds with freelance science journalist Mandy Nguyen. Interested in more animal stories? Email us your ideas and questions to explore at shortwave@npr.org. They may become a future episode! Support public media with NPR+ and enjoy perks for over 25 podcasts like this one. This show’s perks include sponsor-free listening. Learn more at plus.npr.org. See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences. NPR Privacy Policy
September 9 · 14 min
Lindsay Clancy and postpartum psychosis
The trial around Lindsay Clancy may be over for now, but it still leaves us with questions. On today’s episode, we talk to psychiatrists and patients to answer them: What is postpartum psychosis, exactly? Why don’t we know more about it? And what can you do if you are worried about a postpartum loved one? Interested in more stories on mental health? Email us your question at shortwave@npr.org. Support public media with NPR+ and enjoy perks for over 25 podcasts like this one. This show’s perks include sponsor-free listening. Learn more at plus.npr.org. See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences. NPR Privacy Policy
#1548
September 8 · 11 min
How hurricanes triggered lizard evolution
Hurricane season is upon us and it turns out that these powerful storms can quickly affect the biology of animals. After hurricanes Irma and Maria hit the islands that make up Turks and Caicos about a decade ago, the silver key anole adapted. They now have a shorter fourth toe on their hind legs! That could help them cling to objects better. But how do you know unless you put lizards in front of a fan and record how long they can hold on? This study is out now in the journal Current Biology. Interested in more science in the news? Email us your question at shortwave@npr.org. Support public media with NPR+ and enjoy perks for over 25 podcasts like this one. This show’s perks include sponsor-free listening. Learn more at plus.npr.org. See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences. NPR Privacy Policy
September 7 · 13 min
When is your brain actually 'adult'?
Summer is winding down and school is back. And all of that has us thinking about this idea that something happens in the human brain when we turn 25. Suddenly, we can rent a car without fees. Make rational decisions. We may even regret some of our past… indiscretions. All because we’re developed…right? Well, a paper in the journal Nature suggests that may not be the case. Neuroscientists found four distinct turning points in brain development across the human lifespan – and that the brain may be in its “adolescent” phase until about the age of 32. (Encore episode) Interested in more of the science inside your brain? Email us your question at shortwave@npr.org. Support public media with NPR+ and enjoy perks for over 25 podcasts like this one. This show’s perks include sponsor-free listening. Learn more at plus.npr.org. This episode was produced by Rachel Carlson. It was edited by Rebecca Ramirez. Tyler Jones checked the facts. The audio engineer was Kwesi Lee. See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences. NPR Privacy Policy
September 4 · 14 min
A new investigation shows heat is even deadlier than we thought
Hot weather isn’t just an inconvenience. It’s killing thousands more Americans than show up in official records. That’s the finding from a new NPR investigation, in partnership with Boston University. And the way they came up with that new, better estimate of the true toll of heat is, of course, with science. This episode, we’ll bring you all the details – and chat about why getting good estimates could save lives. Interested in more science-based investigations? Email us your question at shortwave@npr.org. Support public media with NPR+ and enjoy perks for over 25 podcasts like this one. This show’s perks include sponsor-free listening. Learn more at plus.npr.org. See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences. NPR Privacy Policy
September 2 · 12 min
The science of emotional regulation — and how to do it better
Do you ever feel like your emotions control you instead of you controlling them? Maybe you lash out at someone after a long day at work or indulge to avoid a stressful situation. It’s called emotional dysregulation and don’t worry – we all experience it at some point. Luckily, there’s a better way of dealing with our feelings: building emotional intelligence. That may seem daunting, but Short Wave is here to guide you through everything from understanding the importance of emotions to how we can repair our relationship to them. Interested in learning more about your brain and your feelings? Email us your question at shortwave@npr.org. We might cover it in a future episode! Support public media with NPR+ and enjoy perks for over 25 podcasts like this one. It includes perks like bonus episodes, early access, archive access, curated playlists and sponsor-free listening. Learn more at plus.npr.org. See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences. NPR Privacy Policy
September 1 · 13 min
What can seashells teach us about the health of our oceans?
Seashells: They're beautiful remnants to carry home from the beach—and so much more! According to environmental journalist Cynthia Barnett, seashells record history more accurately than the humans who first wrote it down. In this episode, we talk about the science of seashells, their impact on humankind and the scientist behind a very famous tongue twister. Check out Cynthia’s book The Sound of the Sea and check out Emily’s reporting on sandcastles. Interested in more marine biology stories? Email us your question at shortwave@npr.org. Support public media with NPR+ and enjoy perks for over 25 podcasts like this one. This show’s hperks include sponsor-free listening. Learn more at plus.npr.org. See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences. NPR Privacy Policy
#1543
August 31 · 15 min
Football is here – and so is a new study on CTE
The NFL season begins this week, but America’s favorite sport has been on our minds for other reasons recently. New research released in the journal BMJ reveals that 1 in 4 former NFL players in this sample had CTE, a neurodegenerative brain disease caused by repetitive head injuries. Past studies already showed that football players are at high risk for CTE, but this study – which assessed ex-NFL players who died from 2016 to 2021 – revealed that at least a quarter of those former players died with CTE, and the study’s lead author says the actual numbers are likely higher. What does that mean for players (and fans) of American football? Short Wave host Nate Rott and NPR sports correspondent Becky Sullivan find out. If you liked this episode, check out our episode on the brain injuries caused by operating blast weapons. Interested in more sports science? Email us your question at shortwave@npr.org. Support public media with NPR+ and enjoy perks for over 25 podcasts like this one. This show’s perks include sponsor-free listening. Learn more at plus.npr.org. See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences. NPR Privacy Policy
August 28 · 13 min
NASA's newest telescope has a top secret past
The new Nancy Grace Roman space telescope is slated to launch this weekend. It was originally built for the National Reconnaissance Office as a spy satellite, but was never launched. Instead, NRO gave it to NASA about 15 years ago. After some major modifications, it’s set to begin its five-year mission peering at new supernovas, distant galaxies and planets orbiting stars outside our solar system. It should help scientists get a better understanding of the mysterious force known as dark energy – which will tell us about the fate of the universe. If you liked this episode, check out Regina’s reporting demystifying the mysterious red dots spotted by the James Webb Space Telescope. Interested in more space news? Email us your question at shortwave@npr.org. Support public media with NPR+ and enjoy perks for over 25 podcasts like this one. This show’s perks include sponsor-free listening. Learn more at plus.npr.org. See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences. NPR Privacy Policy
August 26 · 12 min
How your metabolism could alter your mental health
In 2009, medical student Shebani Sethi watched a patient in a weight loss program make a remarkable recovery. The dietary intervention she underwent alleviated her schizophrenia symptoms, something the woman had tried – and failed – to treat with medication for years. That experience sent Shebani down a medical path that would lead her to treating mental health in a radically different way. Today host Emily Kwong talks to Shebani about the emerging field of metabolic psychiatry and how ketogenic metabolic therapy may treat schizophrenia, bipolar disorder and depression. Read Shebani’s article on metabolic psychiatry here. Interested in more lifestyle science? Email us your question at shortwave@npr.org. Listen to every episode of Short Wave sponsor-free and support our work at NPR by signing up for Short Wave+ at plus.npr.org See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences. NPR Privacy Policy
August 25 · 11 min
AI-made viruses could be the future of medicine
The era of AI-generated viruses is here. Some scientists are using AI to design viruses that can attack bacteria. The hope is that these tailor-made viruses can fight drug-resistant bacterial infections in people. And longer-term, Brian Hie, the Stanford researcher spearheading this project, hopes that AI can help create more complicated biological systems to treat formidable diseases. But some experts warn that placed in the wrong hands, this technology could create the next pandemic. Interested in more AI-related research? Email us your question at shortwave@npr.org. Support public media with NPR+ and enjoy perks for over 25 podcasts like this one. This show’s perks include sponsor-free listening. Learn more at plus.npr.org. See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences. NPR Privacy Policy
August 24 · 14 min
How much has the U.S.’s wildlife changed since Lewis and Clark?
Ever wish you could have been part of the Lewis and Clark expedition? Us too. The Corps of Discovery came across scores of plants and animals that were new to Western science: Grizzly bears, ponderosa pines, a “barking squirrel” that William Clark would later call the prairie dog. A modern effort is underway to see how much the country’s wildlife has changed in the 220-some years since their journey. Host Nate Rott tags along with some scientists re-surveying a part of the expedition’s route in western Montana. And he wishes he was in better shape. Interested in more science in the news? Email us your question at shortwave@npr.org. Support public media with NPR+ and enjoy perks for over 25 podcasts like this one. This show’s perks include sponsor-free listening. Learn more at plus.npr.org. See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences. NPR Privacy Policy
August 21 · 12 min
Why scientists are stoked about mysterious black hole stars
You've heard of black holes. You've heard of stars. But have you heard of the newly discovered black hole stars that may explain multiple mysteries of the universe? We just did and we're honestly freaking out about it. Learn everything you need to know about it in this episode. Plus, hear some other cool stories fresh off the presses: Which exercise can help reduce your risk of dementia and how shrews shrink — and then regrow — parts of their body throughout the year. Interested in hearing more reporting on space, scientific mysteries or other emerging science? We want to know! Email us what you'd like us to talk about at shortwave@npr.org! Support public media with NPR+ and enjoy perks for over 25 podcasts like this one. This show’s perks include sponsor-free listening. Learn more at plus.npr.org. See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences. NPR Privacy Policy
#1537
August 19 · 14 min
More men are taking testosterone. What gives?
If you’re a guy – or even just friends with a guy – and on the Internet, you may have noticed that testosterone discourse is everywhere. There’s Defense Secretary Pete Hegseth announcing testosterone screenings for soldiers, Joe Rogan discussing hormone therapy, and influencers discussing high- and low-T levels. Those levels affect more than just sex. They also affect metabolism, bone health, muscle mass, red blood cell production and brain function. NPR science reporter Will Stone took a deep dive into it all: What deficiency looks like in men, what doctors recommend and what the research says about who actually needs testosterone replacement therapy. Interested in hearing more reporting on popular science topics? Email us what you’d like us to cover at shortwave@npr.org. Support public media with NPR+ and enjoy perks for over 25 podcasts like this one. This show’s perks include sponsor-free listening. Learn more at plus.npr.org. See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences. NPR Privacy Policy
#1536
August 18 · 12 min
A survivor's view from inside a tornado
What’s the dumbest thing Perry Samson says he’s ever done? Getting caught inside a tornado. But when you’re an atmospheric scientist who studies supercell thunderstorms—with a special interest in the ones that cause tornadoes—that sort of thing is a bit of an occupational hazard. Lucky for Perry, he also made a split-second decision while in the tornado that may be the smartest thing he’s ever done. So today on the show: What we can learn from nature at its wildest. Interested in more science behind the weather? Email us your question at shortwave@npr.org. Support public media with NPR+ and enjoy perks for over 25 podcasts like this one. This show’s perks include sponsor-free listening. Learn more at plus.npr.org. See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences. NPR Privacy Policy
August 17 · 14 min
Could future wars be fought by AI?
This year, the Department of Defense announced that they’d entered agreements with eight artificial intelligence companies. It follows decades of popular media exploring the idea of artificial intelligence in war – from the computer threatening global thermonuclear conflict in the movie WarGames to the Skynet neural net in Terminator. In 2026, when Anthropic’s Claude and OpenAI’s ChatGPT are just a click away, the concept of AI-supported war is suddenly much closer to reality. So what does it really mean for militaries to use AI? And what are the potential implications if they succeed? Short Wave producer Hannah Chinn reports. Listen to the whole Tech Camp series. Interested in more military science and/or tech episodes? Email us your question at shortwave@npr.org. Support public media with NPR+ and enjoy perks for over 25 podcasts like this one. This show’s perks include sponsor-free listening. Learn more at plus.npr.org. See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences. NPR Privacy Policy

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