Short Wave

For generations, the all-female Haenyeo divers have routinely dove into frigid waters off the coast of South Korea, holding their breath for minutes at a time, as they collect seafood to eat and sell. These women start diving as girls and continue well into old age. And recent research suggests that it's not just years of training that makes this feat possible – it's also a set of special genetic adaptations. Science reporter Ari Daniel brings us the story. Read more of Ari's reporting here. Have another story about biology and genetics for us to consider? Email us at [email protected]. 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/shortwave. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 20 June 2025

We are in the thick of multiple sports seasons: the NBA finals are happening, and baseball and soccer are in full swing. For devoted fans, emotions can run pretty high during a game. Cognitive anthropologist Dimitris Xygalatas has long been fascinated by that intensity — and how uniform it can be across fans. So, he and fellow researchers at the University of Connecticut decided to look into what exactly makes fans so deeply connected to their team and to fellow supporters. It turns out that connection may have less to do with actual gameplay and more to do with rituals. Their research was recently published in the journal Proceedings of the National Academy of Sciences. Questions about sports science? Email us at [email protected]. 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/shortwave. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 18 June 2025

Since last week, Israel has been attacking Iran's nuclear facilities, along with many other targets around the country. Iran has fired hundreds of missiles in response. NPR correspondent Geoff Brumfiel has been watching all of this very closely because Israel's missile defenses have been a focus of the Trump White House. This year, President Trump requested funding from Congress for a "Golden Dome for America" — a missile defense system that would protect all of the United States. The idea comes from Israel's Iron Dome — a network of interceptor missiles stationed at points across the country. Iron Dome and related Israeli air defenses don't get every missile fired — including some launched in the past few days by Iran — but the Israeli military says it has intercepted thousands of rockets since it was built. Trying to get that kind of protection for America, though, might be a very different matter. Read more of science correspondent Geoff Brumfiel's reporting on this topic and find NPR's coverage of the Middle East here. Questions about nuclear science? Email us at [email protected]. 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/shortwave. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 17 June 2025

The skunky smell of cannabis may be going out of style. NPR's science correspondent Pien Huang visited the grow facility for District Cannabis, which sells weed in Washington D.C. and Maryland. On her tour, she learned why cannabis smells the way it does. Plus, how many strains have been bred — to smells like lavender, citrus and even cookies. Read more of science correspondent Pien Huang's reporting on this topic here, or check out the entire special series, "How safe is your weed?" Questions about the science behind the mysteries, events and... smells... all around us? Email us at [email protected] – we'd love to hear your ideas! Listen to Short Wave on Spotify and Apple Podcasts. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 16 June 2025

Take a big inhale through your nose. Now, exhale. Breathing may seem simple, but it's controlled by a complex brain network. Each inhale gives the human brain information about the external world. And now, a new research paper in the journal Current Biology suggests that humans have unique breathing patterns, almost like nasal "fingerprints." Not only that: These unique breathing patterns seem to say a lot about people's physical and mental health. Questions about the science behind your brain and body? Email us at [email protected] – we'd love to hear your ideas! Listen to Short Wave on Spotify and Apple Podcasts. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 13 June 2025

Homeowners' insurance isn't just getting more expensive ... it's also getting harder to secure in the first place. Across the country, an increase in climate-related disasters like heat waves, wildfires and hurricanes is creating challenges for both insurers and their customers. One successful strategy taking hold in Alabama and other states: Climate-proofing houses — and incentivizing it with insurance discounts. Still, not all states or homeowners face similar risks. And insurers aren't legally required to take climate-proofing into account when assessing the insurability of a home. That's why states are experimenting with different programs — and insurance legislation — to find a solution. This episode is part of NPR's Climate Solutions Week: a series of stories covering real world solutions for building, and living, on a hotter planet. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 11 June 2025

Roughly 163 million people experience obsessive-compulsive disorder and its associated cycles of obsessions and compulsions. They have unwanted intrusive thoughts, images or urges; they also do certain behaviors to decrease the distress caused by these thoughts. In movies and TV, characters with OCD are often depicted washing their hands or obsessing about symmetry. Dr. Carolyn Rodriguez says these are often symptoms of OCD, but they're not the only ways it manifests – and there's still a lot of basics we have yet to understand. That's why, in this encore episode, Carolyn looks to include more populations in research and find new ways to treat OCD. If you're interested in potentially participating in Dr. Rodriguez's OCD studies, you can email [email protected] or call 650-723-4095. _ Questions about the brain? Email us at [email protected] – we'd love to hear your ideas for a future episode! 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/shortwave. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 10 June 2025

The Dog Aging Project is a long-term nationwide survey on the health and lifestyles of U.S. dogs that launched in 2019. Today, the project has more than 50,000 canines and counting. Today, hear what researchers have learned from one of the largest dog health data sets and what it could tell us both about increasing the lifespan of our furry friends and us. For more information about signing your pup up for the Dog Aging Project, visit their website. Have more questions about animals? Let us know at [email protected]. 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/shortwave. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 9 June 2025

"Olo" does not exist in nature, nor can it be found among paint cans. But for a very select few, olo can be seen — through the intervention of careful computing and lasers. A team led by vision scientist Austin Roorda and computer scientist Ren Ng at UC Berkeley figured out a method for stimulating only one specific subset of cones of the retina. It's the only way to view this spectacular teal. Creating the color is helping push the boundaries of vision science. Follow Short Wave on Spotify, and Apple Podcasts. More questions about the science behind our everyday lives? Email us at [email protected]. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 6 June 2025

There are over 200 species of deep-sea anglerfish; some are long and thin, some are squat and round, some have fins that they use to "walk" along the sea floor, and others have huge eyes set far back into their heads. But how did all this morphological diversity first come to be? Thanks to a new anglerfish family tree, now we know. Scientists built this evolutionary tree using genetic information from hundreds of samples and anglerfish specimens across the globe. It indicates that anglerfish originated from an ancestor that crawled along the seafloor ... and sheds new light on how experts could think about biodiversity as a whole. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 4 June 2025

As artificial intelligence seeps into some realms of society, it rushes into others. One area it's making a big difference is protein science — as in the "building blocks of life," proteins! Producer Berly McCoy talks to host Emily Kwong about the newest advance in protein science: AlphaFold3, an AI program from Google DeepMind. Plus, they talk about the wider field of AI protein science and why researchers hope it will solve a range of problems, from disease to the climate. Have other aspects of AI you want us to cover? Email us at [email protected]. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 3 June 2025

For hundreds of years sailors have told stories about miles of glowing ocean during moonless nights. This phenomenon is known as "milky seas," but the only scientific sample was collected in 1985. So atmospheric scientist Justin Hudson, a PhD candidate at University of Colorado, used accounts spanning 400 years to create a database of milky seas. By also using satellite images to visually confirm the tales, Justin hopes his research brings us one step closer to unraveling this maritime mystery. 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/shortwave. Got a question about a scientific mystery? Let us know at [email protected]. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 2 June 2025

Depending on what time it is, your body responds differently to an injury or infection. During the day, you're likely to heal faster and fight infection better than at night. And historically, scientists weren't entirely sure why. That picture is starting to clear up thanks to a new study published last week in the journal Science Immunology. The research finds a missing piece of the puzzle in neutrophils, powerful immune cells that — despite living less than 24 hours — know the difference between day and night. Got a question about how the body works? Let us know at [email protected]. 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/shortwave. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 30 May 2025

Around 40 million people around the world have bipolar disorder, which involves cyclical swings between moods: from depression to mania. Kay Redfield Jamison is one of those people. She's also a professor of psychiatry at the Johns Hopkins School of Medicine and has written extensively about the topic, from medical textbooks to personal memoirs. Today on Short Wave, she joins us to talk about the diagnosis process, treating and managing bipolar disorder. 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/shortwave. Got a question about mental health? Let us know at [email protected]. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 28 May 2025

Gen Z and younger millennials are the most climate literate generations the world has ever seen. They learned about climate change in school; now, it's part of how they plan for the future, including for jobs, housing ... and kids. So, what do experts say about how to navigate the kid question? In this installment of Nature Quest, Short Wave speaks to climate journalist Alessandra Ram about the future she sees for her newborn daughter. Plus, how do we raise the next generation in a way that's good for the planet? Resources discussed in this episode include: Jade Sasser's book, Climate Anxiety and the Kid Question Kimberly Nicholas's High Impact Climate Action Guide Elizabeth Bechard's book, Parenting in a Changing Climate The Climate Mental Health Network's Climate Emotions Wheel Got a question about changes in your local environment? Send a voice memo to [email protected] with your name, where you live and your question. You might make it into our next Nature Quest episode! Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 27 May 2025

Happy Memorial Day, Short Wavers! This holiday, we bring you a meditation on time ... and clocks. There are hundreds of atomic clocks in orbit right now, perched on satellites all over Earth. We depend on them for GPS location, Internet timing, stock trading and even space navigation. In today's encore episode, hosts Emily Kwong and Regina G. Barber learn how to build a better clock. In order to do that, they ask: How do atomic clocks really work, anyway? What makes a clock precise? And how could that process be improved for even greater accuracy? - For more about Holly's Optical Atomic Strontium Ion Clock, check out the OASIC project on NASA's website. - For more about the Longitude Problem, check out Dava Sobel's book, Longitude. 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/shortwave. Have questions or story ideas? Let us know by emailing [email protected]! Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 26 May 2025

Riddle us this: Which animal is pink, curved beaked and a master of the physics required to create water tornadoes? If you guessed flamingos, you're right. New research out this month in the journal Proceedings of the National Academy of Sciences shows that across a range of harsh environments, flamingos have become masters — of physics, fluid dynamics and so much more — all in pursuit of their filter-fed prey. Short Wave host Regina G. Barber sits down with biomechanics researcher Victor Ortega Jiménez to hear all of the incredibly involved lengths these birds go through to get their prey. Want to hear about more physics or animal discoveries? Email us at [email protected] to tell us what areas of science you'd be interested in. 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/shortwave. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 23 May 2025

What's it like to get bit by a venomous snake? "It's like a bee sting times a thousand," Tim Friede says. Tim would know. Over the past few decades, he's let himself be bitten over 200 times by all kinds of venomous snakes — black mambas, taipans, cobras, kraits and more. With time, he's gradually built immunity to multiple types of venom. Could scientists help him share that immunity with others? Science reporter Ari Daniel joins Short Wave to explain how antivenom works, what scientists discovered and where the research may lead. Plus, what does Tim Friede have in common with Princess Bride? Want to hear about more medical discoveries? Email us at [email protected] to tell us what areas of science you'd be interested in. 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/shortwave. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 21 May 2025

The Trump administration is rewriting policies and reducing funding for multiple agencies that handle climate change, including NOAA, EPA and FEMA. We asked NPR reporters Lauren Sommer and Alejandra Borunda what that the implications of that are — and who the changes will affect. Want to hear more ways research is being impacted by the new administration? Email us at [email protected] to let us know — and we may cover your idea in a future episode! 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/shortwave. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 20 May 2025

In science fiction, wormholes are hyperspace subway tubes linking one part of a galaxy directly to another, distant point. But could they actually exist? To find out, we talk to theoretical physicist Ron Gamble, who says wormholes aren't just a matter of science fiction — and they have big implications about the shape of space itself. Want to hear about more hypotheticals physicists have to confront in their work? Email us at [email protected] — we might turn your idea into a whole episode! 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/shortwave. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 19 May 2025

Approximately 80% of orange cats are males, including the four orange cats owned by the Short Wave team. Scientists have long suspected that orange color was a sex-linked trait — hiding somewhere on the X chromosome. Now, scientists at Stanford University and Kyushu University in Japan have characterized the mutation responsible for orange cat coloration. Both groups published their results in the journal Cell Biology this week. Have a question about the animals all around us? Email us at [email protected] — we'd love to hear from you! Listen to Short Wave on Spotify and Apple Podcasts. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 16 May 2025

Most bats use echolocation to navigate and hunt, but some use their ears for another trick: eavesdropping. "And then these frog-eating bats, for example, they are actually listening in on the mating calls of frogs that are much, much lower in frequency," says behavioral ecologist Rachel Page. But how the bats knew this eavesdropping trick was a mystery. So she set up and experiment with baby bats and a speaker. Have a question about the animals all around us? Email us at [email protected] — we'd love to hear from you! 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/shortwave. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 14 May 2025

Becoming fluent in a second language is difficult. But for adults, is it impossible? Science says no. In this encore episode, Short Wave host Emily Kwong dissects the "critical period hypothesis," a theory which linguists have been debating for decades — with the help of Sarah Frances Phillips, a Ph.D. student in the linguistics department at New York University. Together, Emily and former Short Wave host Maddie Sofia explore where the theory comes from, how it applies to second-language acquisition and what it means for Emily's efforts to learn Mandarin Chinese as an adult. Have a linguistics or neuroscience question? Email us at [email protected] — we'd love to hear from you! 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/shortwave. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 13 May 2025

Today, we're airing an episode of NPR's daily economics podcast, The Indicator from Planet Money. It's about a group of people we know well: scientists. President Trump's federal cuts and scrutiny of academic institutions are forcing some U.S. scientists to head for the border. On today's show, an entomologist keeping America's farms safe from pests reconsiders America. And a CEO of a Canadian hospital explains how they are benefiting from the exodus. Want to learn more about the intersection of science and the economy? Email us at [email protected]. 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/shortwave. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 12 May 2025

Google, Microsoft and Meta have all pledged to reach at least net-zero carbon emissions by 2030. Amazon set their net-zero deadline for 2040. To understand how these four tech companies could possibly meet their climate goals amid an artificial intelligence renaissance, Short Wave co-host Emily Kwong discusses the green AI movement. Speaking with scientists, CEOs and tech insiders, she explores three possible pathways: nuclear energy, small language models (SLMs) and back-to-the-future ways of keeping data centers cool. Listen to Part 1 of Short Wave's reporting on the environmental cost of AI here. Have a question about AI and the environment? Email us at [email protected] — we'd love to hear from you! 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/shortwave. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 9 May 2025

By 2028, Lawrence Berkeley National Laboratory forecasts that U.S. data centers could use as much as 12% of the nation's electricity. The reason: generative AI. Since 2022, AI innovation by four leading tech companies — Google, Microsoft, Meta and Amazon — has led to annual increases in both energy and water consumption. So, in this episode, Short Wave co-host Emily Kwong probes huge water footprint of AI. We begin with the rise of data centers, then look at how computers came to need so much water and, finally, what tech companies are doing to try to turn the ship around. P.S. Part 2 talks about the leading solutions in the green AI movement. So don't miss our Friday episode! Curious about tech and the environment? Email us at [email protected] — we'd love to hear from you! 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/shortwave Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 7 May 2025

Do you consider yourself a creative person? If not, you may be holding yourself back. Psychologist Zorana Ivcevic Pringle says creativity isn't a trait. Creativity is a choice. After studying creativity for more than 20 years, she has some suggestions for how anyone can stick with their creative ideas. Guest host and producer Berly McCoy talks to her about her new book The Creativity Choice. Curious about more psychology research? Let us know by emailing [email protected]. 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/shortwave. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 6 May 2025

Recently, a group of scientists claimed they found possible signs of life on a planet called K2-18b. The news made headlines. Researchers said they'd detected sulphur-based gases that, on Earth, are strongly associated with life. But the research caused an uproar in astronomy circles because other scientists don't think the data is strong enough to celebrate an alien find just yet. In fact, they have some real issues with how this whole thing went down, and a new analysis casts further doubt on the findings. NPR science correspondent Nell Greenfieldboyce is here to wade into the controversy — and tell us what all this means for the future of searching for life beyond our solar system. Want to hear more about new science research? Let us know by emailing [email protected]. 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/shortwave. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 5 May 2025

Minecraft is a movie and a very popular video game with iconic block graphics that characters can "mine" for building material and gems. It's also what cognitive scientist Charley Wu and his team utilized to study how people learned as they played. Their unique study focused on both individual and social learning — and they found a clear answer to which players were most successful. (Hint: Get you a player who can do both.) Their results were published recently in the journal Nature Communications. Want to hear more about new science research? Let us know by emailing [email protected]. 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/shortwave. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 2 May 2025

In its first 100 days, the Trump administration — specifically, the Department of Government Efficiency — shuttered agencies and slashed budgets pertaining to foreign aid, scientific research, food safety and more. How will this impact people's health and well-being both in the U.S., and around the world? To answer that question, we're calling in our colleagues: global health correspondent Gabrielle Emmanuel and health policy reporter Selena Simmons-Duffin. (P.S. If you liked this episode, check out the breakdown of health and science policy changes we did after Trump's first 50 days — with different NPR reporters — here.) Want to hear more about how policy changes affect scientific research and discovery? Let us know by emailing [email protected]. 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/shortwave. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 30 April 2025

A good night's sleep makes a big difference to our mental and physical health. Without quality sleep, we're less productive. Grumpy. It can even affect our hearts. Meanwhile, more and more people are having problems falling and staying asleep, including kids. So some parents are turning to a supplement called melatonin as a potential solution. But some experts worry that there isn't enough research about how regularly taking melatonin affects kids in the long term. Today on the show, we explore the research with Michael Schulson, who recently wrote about the topic for Undark. Want to hear more stories about human health? Email us and let us know at [email protected]. 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/shortwave. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 29 April 2025

From starfish and sea slugs to jellyfish and sponges, the ocean's invertebrates are some of the most ancient and diverse critters on Earth. And so are their superpowers, as marine biologist Drew Harvell calls their unique abilities. In her new book, The Ocean's Menagerie, she chronicles the amazing abilities of some of these spineless creatures and showcases how they've inspired our science and medicine. Listen to our past episode on nudibranchs — the potent slugs of the sea — HERE. Want to hear more stories about underwater marvels? Email us and let us know at [email protected]. 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/shortwave. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 28 April 2025

Some scientists are convinced that beyond Neptune, there's a planet they've yet to see. This so-called "Planet 9" is so far away, it would be a faint object. The stretch of sky researchers would have to search is huge. But a new astronomical facility on a mountaintop in Chile could help tackle the search. The NSF-DOE Vera C. Rubin Observatory has been under construction for years. Now, scientists are finetuning its instruments so the telescope can begin its 10-year mission of taking images of almost the entire southern sky. Read more of science correspondent Nell Greenfieldboyce's reporting here. Want to hear more stories about the mysteries of space? Email us and let us know at [email protected]. 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/shortwave. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 25 April 2025

A fish walks into a pharmacy ... well, not exactly. Fish aren't being prescribed anti-anxiety drugs. But they are experiencing the effects. Researchers have found more than 900 different pharmaceutical ingredients in rivers and streams around the world, though they're not yet sure how this could change the behavior of fish and other aquatic animals in the wild. "We can't, you know, dump a bunch of pharmaceuticals into the river," says Jack Brand, biologist at the Swedish University of Agricultural Sciences. Instead, Jack's team did the next best thing – with some surprising results. This episode was reported by NPR science correspondent Jon Lambert. Check out more of his reporting. Want to hear more stories about animal behavior? Email us and let us know at [email protected]. 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/shortwave. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 23 April 2025

Welcome!! This is the first episode of Nature Quest, a monthly Short Wave segment that answers listener questions about your local environment. This month, we hear from a listener in California who's concerned that the flowers in his neighborhood are blooming way, way earlier. Is that normal? And is climate change the culprit? Short Wavers Emily Kwong and Hannah Chinn investigate. Got a question about changes in your local environment? Send a voice memo to [email protected] with your name, where you live and your question. We might make it into our next Nature Quest episode! 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/shortwave. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 22 April 2025

The male European fiddler crab attracts his mate by performing a courtship dance. New research published in the Journal of Experimental Biology says that dance isn't just notable for its visuals — it's notable for its vibrations, too. Researchers observed four different stages of the crab's courtship dance, each stage escalating the amount of seismic vibrational output. "It's 'come and find me in my underground house, ladies,'" says Beth Mortimer, a study author and biologist at the University of Oxford. Interested in more seismic vibration communication? Send us an email at [email protected]. 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/shortwave. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 18 April 2025

A recent series of studies suggests that the brains of birds, reptiles and mammals all evolved independently — even though they share a common ancestor. That means evolution has found more than one way to make a complex brain, and human brains may not be quite as special as we think. To learn more about this, we talk to Fernando García-Moreno about this series of studies he co-authored that came out in Science in February. Want to hear more about the complex road of evolution? Send us an email at [email protected]. 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/shortwave. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 16 April 2025

Plants are blooming right now – and so are people's allergies. And if it feels like those pesky symptoms are getting worse ... you're probably right. Wednesday, a review published in the journal The Laryngoscope looked at the link between climate change and increasing rates of allergic rhinitis, or hay fever. So today, we turn back to a classic Short Wave episode from Brit Hanson and Maddie Sofia, who spoke to allergy expert Dr. Juanita Mora about some quick tips for managing seasonal allergies. Want more of the science behind your health questions? Send us an email at [email protected]. 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/shortwave. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 15 April 2025

Did you know there's an insect that can fling its pee 40 times faster than a cheetah accelerates? We did — thanks to a comic from the Bhamla Lab at the Georgia Institute of Technology. Since 2020, principal investigator Saad Bhamla has been leading the charge to make science more accessible by publishing comics alongside every paper his lab publishes. Today, he introduces Emily to two of the most popular characters — Sheriff Sharpshooter and Captain Cicada — and shares why a comic about butt-flicking insects is a valuable way to take science beyond the lab. Want to hear more about nature's superpowers? Send us an email at [email protected]. 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/shortwave. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 14 April 2025

Dune. Star Wars. Alien. Science fiction movies love alien worlds, and so do we. But how do scientists find planets outside our solar system in real life? One way is by looking for the stars that wiggle. Historically, astronomers have measured those wiggles via the Doppler method, carefully analyzing how the star's light shifts. Thanks to new data from the GAIA telescope, scientists have a much better picture of distant stars' wiggles — and the exoplanets that cause them. Want to hear more about exoplanet discoveries? Send us an email at [email protected]. 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/shortwave. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 11 April 2025

This week, we've heard from researchers trying to untangle the effects of the "trip" that often comes with psychedelics and ketamine from the ways these drugs might change the human brain. For part three of our series on psychedelic drug research, we get a glimpse into why some researchers are taking the "trip" out of these drugs altogether. You don't need to have heard the previous two episodes to understand this episode on what could be next for psychedelic medicine. Catch the rest of this series on psychedelics and related drugs this week by following us on Spotify and Apple Podcasts. They're the previous two episodes in our podcast feed. Have other questions about psychedelics and the brain? Let us know by emailing [email protected]! Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 9 April 2025

What if you could get all the potential benefits of ketamine without the "trip"? For part two of our series on psychedelics, we look at how some researchers are trying to disentangle the "trip" from the drugs' effects on the brain — and why the answer could help direct the future of psychedelic research. (Spoiler alert: People generally know if they're tripping or not.) This episode: a researcher navigating this challenge by putting his patients to sleep. Catch the rest of this series on psychedelics and related drugs this week by following us on Spotify and Apple Podcasts. Have other questions about psychedelics and the brain? Let us know by emailing [email protected]! Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 8 April 2025

Researchers are studying psychedelics as a possible treatment for conditions like depression, PTSD and substance use disorders. But they don't know exactly how these drugs work. Getting the answer to this question is especially difficult when people often take psychedelics like LSD and psilocybin for the "trip." This week on Short Wave, we're talking to researchers about how they're trying to untangle the effects of this "trip" from the ways psychedelics might change the human brain ... and why the answer could help direct the future of psychedelic research. Catch the rest of this series on psychedelics and related drugs this week by following us on Spotify and Apple Podcasts. Have other questions about psychedelics and the brain? Let us know by emailing [email protected]! Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 7 April 2025

Running an entire marathon takes a lot of energy. Neuroscientist Carlos Matute knows this: he's run 18 of them. He wondered how runners' bodies get the energy they need to make it to the finish line. His new research in the journal Nature Metabolism may be the first step in answering the question – and suggests their brains might be (temporarily) depleting a fatty substance that coats nerve cells called myelin. Have other questions about the brain? Let us know by emailing [email protected]! 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/shortwave. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 4 April 2025

Each year, the United States has about 1,200 tornadoes. Many of them happen in tornado alley, a very broad swath of the U.S. that shifts seasonally. This area gets at least ten times more tornadoes than the rest of the world. Science writer Sushmita Pathak says that huge difference can be chalked up to one word: geography. But there's a slice of South America with similar geographical features that gets comparatively fewer tornadoes, so what gives? Sushmita wades into the research weeds with guest host Berly McCoy, one of Short Wave's producers. Read Sushmita's full article on tornadoes that she wrote for the publication Eos. Have other science weather stories you think we should cover on the show? Let us know by emailing [email protected]! 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/shortwave. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 2 April 2025

Most iguanas are indigenous to the Americas. So how did the Fijian species end up on the island, nearly 5000 miles away in the South Pacific? According to a new study in the journal PNAS, it was probably via raft ... that is, on clump of floating trees. And this rafting hypothesis isn't entirely unprecedented. After hurricanes Luis and Marilyn hit the Caribbean in the 1990s, researchers found that a group of iguanas had floated over 180 miles away from Guadeloupe to the territory of Anguilla. Want to hear more about iguanas? Or rafts? Or evolutionary biology? Email us at [email protected]. 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/shortwave. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 1 April 2025

It seems like artificial intelligence is everywhere in our virtual lives. It's in our search results and our phones. But what happens when AI moves out of the chat and into the real world? NPR science editor and correspondent Geoff Brumfiel took a trip to the Intelligence through Robotic Interaction at Scale Lab at Stanford University to see how scientists are using AI to power robots and the large hurdles that exist for them to perform even simple tasks. Read Geoff's full story. Interested in more AI stories? Email us your ideas at [email protected]. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 31 March 2025

What are the narwhals up to? Generally, we don't really know! They are mysterious creatures. NPR science correspondent Nell Greenfieldboyce talks about new, rare drone footage scientists captured of arctic narwhals. The video sparked new ideas for how they use their tusks. Read Nell's full piece. Love mysterious critters and want to hear more? Email us at [email protected]. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 28 March 2025

Microalgae are tiny organisms that convert energy from sunlight into fuel. The arctic ecosystem depends on them. In springtime, the algae bloom brilliant shades of green and draw tiny crustaceans, fish, birds and more to arctic waters. But what happens in wintertime, when the sun goes down and darkness reins for months? In the depths of the polar night, biogeochemist Clara Hoppe has found evidence that some microalgae are still ready to photosynthesize. Today on the show: how tiny microalgae limbo for their lives and come out more powerful than scientists ever imagined. Want to hear more stories of nature pushing the boundaries of what scientists previously thought possible? Let us know by emailing [email protected]! 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/shortwave. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 26 March 2025

Baseball season is nigh! From Yankee stadium in New York to Dodger stadium in Los Angeles, teams around the country will face off Thursday to mark the start of the 2025 MLB season. And when we here at Short Wave think of baseball, we naturally think of physics. To get the inside scoop on the physics of baseball, like how to hit a home run, we talk to Frederic Bertley, CEO and President of the Center of Science and Industry, a science museum in Columbus, Ohio. In this encore episode, he also talks to host Regina G. Barber about how climate change is affecting the game. Interested in the science of other sports? Email us at [email protected] — we'd love to hear from you. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Transcribed - Published: 25 March 2025