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PODCAST

Short Wave

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.If you"re hooked, try Short Wave Plus. Your subscription supports the show and unlocks a sponsor-free feed. Learn more at plus.npr.org/shortwave

science life sciences

All Episodes

12:36

Nature Quest: Are Flowers Blooming Early?

Short Wave ·

2025/04/22

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 shortwave@npr.org with your name, where you

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14:14

Should Humans Live On Mars?

Short Wave ·

2025/04/21

As global warming continues and space technology improves, there is more and more talk about the growing possibility of a sci-fi future in which humans become a multiplanetary species. Specifically, that we could live on Mars. Biologist Kelly Weinersmith and cartoonist Zach Weinersmith have spent four years researching what life on Mars would look like if we did it anytime soon. In their book A City On Mars, they get into all sorts of questions: How would we have babies in space? How would we have

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9:00

Good Vibrations: How Fiddler Crabs Mate

Short Wave ·

2025/04/18

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

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12:58

How Nature Makes A Complex Brain

Short Wave ·

2025/04/16

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

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7:27

Your Allergies May Be Getting Worse

Short Wave ·

2025/04/15

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

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12:09

All Hail The Butt Flicker

Short Wave ·

2025/04/14

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

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12:41

How Do Astronomers Find Exoplanets? Wiggles!

Short Wave ·

2025/04/11

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

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12:58

Could Psychedelics Become Tripless?

Short Wave ·

2025/04/09

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

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12:10

What If You Took The "Trip" Out Of Ketamine?

Short Wave ·

2025/04/08

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

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11:54

Why The Trip Complicates Psychedelic Research

Short Wave ·

2025/04/07

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

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7:35

Could Running Change Your Brain?

Short Wave ·

2025/04/04

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 shortwave@npr.org! Listen

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11:08

Tornado Alley: Home Of Extreme Winds

Short Wave ·

2025/04/02

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

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9:18

The Iguanas That Rafted To Fiji

Short Wave ·

2025/04/01

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

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12:42

Is AI Ready For Robots?

Short Wave ·

2025/03/31

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

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12:09

Rare Narwhal Footage Shows New Tusk Activities

Short Wave ·

2025/03/28

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 shortwave@npr.org.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy

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13:34

The Algae That Thrive in Arctic Darkness

Short Wave ·

2025/03/26

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

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12:08

Climate Change + Baseball = More Home Runs

Short Wave ·

2025/03/25

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

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11:52

What Scientists Got Wrong About COVID-19

Short Wave ·

2025/03/24

Early in the beginning of the COVID-19 pandemic, scientists predicted the SARS-CoV-2 virus would mutate slowly. They were wrong. Hundreds of thousands of viral mutations and multiple seasonal waves later, we now know why. The answer changes researchers' understanding of viral evolution — and it could help predict the evolution of other viruses in the future. Emily talks about it all with Sarah Zhang, a health writer for The Atlantic. Want to hear more virology or human biology stories? Let us know

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9:07

What Experts Say about ADHD-Tok

Short Wave ·

2025/03/21

Ever diagnosed yourself with a mental health disorder based on a TikTok video? If so, you're not alone. "I personally don't think that there's anything more human than wanting to understand yourself and wanting to understand your own experiences," says Vasileia Karasavva. Vasileia is the lead author of a paper published Wednesday in the journal PLOS One that gets into why this kind of self-diagnosis can be such a double-edged sword.Listen to every episode of Short Wave sponsor-free and support our

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15:45

What's In Your Personal Care Products?

Short Wave ·

2025/03/19

Ever scan the ingredient list of your favorite personal care products like shampoos or lotions and think, what are these complicated chemicals? And are any of them bad for me? We definitely have. And our colleagues at NPR's Life Kit did one step better: They parlayed their anxiety spiral into a helpful guide on the safety of personal care products. So today, Gina talks to Life Kit's Marielle Segarra about some of the top chemicals of concern, including parabens and phthalates.Click here to hear the

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1,382 results

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