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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. Support public media by joining NPR+ at plus.npr.org. You’ll get perks for over 25 NPR podcasts, including sponsor-free listening for Short Wave.

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All Episodes

15:00

These Rats Can Drive. What's Happening In Their Brains?

Short Wave ·

2024/12/03

In neuroscientist Kelly Lambert's lab at the University of Richmond, rats hop into cars, rev their engines and skid across the floor of an arena. Researchers taught these tiny rodents to drive — and turns out, they really like it. But why?Host Regina G. Barber talks with Kelly about her driving rats, and what they tell us about anticipation, neuroplasticity, and decision making. Plus, why optimism might be good for rats, and for humans too.Want to hear more fun animal stories? Let us know at

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14:14

Why Your Brain Loves Sales

Short Wave ·

2024/12/02

This Cyber Monday, a meditation on holiday sales. A quick trip to pick up presents can turn into an hours-long shopping spree thanks to all the ways stores use research from fields like consumer neuroscience and neuromarketing to entice you. Retailers create urgency and scarcity to push you to give into the emotional part of your brain, motivated by the release of dopamine. But with the help of NPR business correspondent Alina Selyukh, we get into the psychology of sales and discounts: Why it's SO

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10:21

This Hazelnut May Help The Land Back Movement In Canada

Short Wave ·

2024/11/29

Beaked hazelnuts are a wild food native to North America. Indigenous peoples in British Columbia have passed down stories of these hazelnuts as a vital food source their ancestors planted and cultivated. These stories motivated Chelsea Geralda Armstrong of Simon Fraser University to look more deeply at the genetics of the beaked hazelnut and determine just how widely it was cultivated. Indigenous rights attorney Jack Woodward hopes research like this can make a difference in the Land Back movement,

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14:28

This COP29, It's All About The Numbers

Short Wave ·

2024/11/27

This year's United Nations climate talks, COP29, wrapped Saturday. Throughout the talks, it was all about the numbers. With the help of NPR climate reporters Julia Simon and Alejandra Borunda, we home in on two. First, $300 billion. That's the amount of money wealthy countries agreed to give developing countries to help them adapt to climate change and reduce pollution. Second, 1.5C. That's a warming limit countries agreed to try not to breach, but that is creeping closer every year. Want to hear

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13:14

How Do You Save An Endangered Language?

Short Wave ·

2024/11/26

By the end of the century, more than 40% of the world's estimated 7,000 languages are in danger of disappearing. Those include indigenous languages in the Amazon. The United Nations also estimates that an Indigenous language dies every two weeks. Today, we focus on two endangered languages spoken in the Vaupés region of northwest Amazonia: Desano and Siriano. Linguist Wilson de Lima Silva at the University of Arizona has been working with the community for a decade in an effort to document the

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15:25

The Battle To Save Monarch Butterflies

Short Wave ·

2024/11/25

Monarch butterfly populations have plummeted due to habitat loss, pesticide use and climate change. In early December, the U.S. Fish and Wildlife Service is going to decide whether the monarch should be listed under the Endangered Species Act. If that comes to pass, the migratory butterfly would be one of the most widespread species to receive this listing. Want to hear more on the animals that surround us? Email us your ideas to shortwave@npr.org — we'd love to hear from you!Listen to every episode

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14:01

Are Starship Launches Trashing Texas?

Short Wave ·

2024/11/22

SpaceX's Starship rocket took off again Tuesday for its sixth test flight. Crowds, including President-elect Donald Trump, gathered at the launch site in Texas to watch it fly part way around the world to the Indian Ocean. Starship – the largest rocket ever built – is the dream of Elon Musk, who hopes to make humans a multiplanetary species. But building the rocket is having a real impact on Earth. The launch site is located in the middle of one of Texas' largest wildlife sanctuaries and

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11:57

The Mystery of the Dead Coho Salmon

Short Wave ·

2024/11/20

For decades, Coho salmon were turning up dead in urban streams the Pacific Northwest. The salmon would stop swimming straight, and then die before they had a chance to spawn. Researchers worried that unless they figured out the cause, the species would eventually go extinct. Enter a formidable crew of biologists, modelers, community scientists, environmental chemists. After eventually ruling out the obvious suspects — things like temperature, oxygen levels and known toxins — researchers eventually

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14:40

How To Have Hard Conversations

Short Wave ·

2024/11/19

Many people are gearing up for holiday conversations with loved ones who may disagree with them — on everything from politics to religion and lifestyle choices. As the conversations unfold, these divisions are visible in our brains too. These conversations can get personal and come to a halt fast. But today on the show we get into research in neuroscience and psychology showing that as much as we disagree, there are ways to bridge these divides – and people who are actively using these strategies in

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13:41

Don't Let Jet Lag Ruin Your Holiday Plans

Short Wave ·

2024/11/18

Getting enough sleep regularly can be tough — and even harder when you're traveling for the holidays. "We need sleep like we need water," says Jade Wu, a behavioral sleep medicine psychologist and author of the book Hello Sleep. She and host Regina G. Barber discuss what's happening to our bodies when we get jet lag and the clocks in our body get out of whack. They also get into the science of the circadian rhythm and how to prepare for a long flight across time zones. Check out CDC's website for

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8:55

The Mystery Mollusk Roaming The Midnight Zone

Short Wave ·

2024/11/15

This critter lurks in the ocean's midnight zone, has a voluminous hood, is completely see through and is bioluminescent. It's unlike any nudibranchs deep sea experts have ever seen before — and now, the researchers who spent twenty years studying them have finally published their findings. Have another scientific discovery you want us to cover on a future episode? Email us at shortwave@npr.org — we might feature your idea on a future episode! Listen to every episode of Short Wave sponsor-free and

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14:14

Should Humans Live On Mars?

Short Wave ·

2024/11/13

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 the last four years researching what this would look like if we did this anytime soon. In their new book A City On Mars, they get into all sorts of questions: How would we have babies in space? How would we

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13:02

These Drones Could Help Keep Your Lights On

Short Wave ·

2024/11/12

One in four U.S. households experiences a power outage each year. Scientists at Oak Ridge National Laboratory are working on technology they hope will help fix electric grids: drones. They're betting that 2-ft. large drones connected to "smart" electric grids are a cost-effective step to a more electrified future.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 an idea for a future episode? We'd love to know

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12:37

Eating Breakfast? You Can Thank Fermentation

Short Wave ·

2024/11/11

In this episode, you're invited to the fermentation party! Join us as we learn about the funk-filled process behind making sauerkraut, sourdough and sour beer. Plus, no fermentation episode is complete without a lil history of our boy, yeast.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy

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13:57

Picking Up Cosmic Vibrations

Short Wave ·

2024/11/08

A pivotal week in Corey Gray's life began with a powwow in Alberta and culminated with a piece of history: The first-ever detection of gravitational waves from the collision of two neutron stars. Corey was on the graveyard shift at LIGO, the Laser Interferometer Gravitational-Wave Observatory in Hanford, Washington, when the historic signal came. This episode, Corey talks about the discovery, the "Gravitational Wave Grass Dance Special" that preceded it and how he got his Blackfoot name

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11:30

A Better Life For Trafficked Turtles

Short Wave ·

2024/11/06

In North-Central New Jersey, there is a backyard teeming with around 200 turtles. Many of these shelled creatures have been rescued from the smuggling trade and are now being nursed back to health in order to hopefully be returned to the wild. Science reporter Ari Daniel joins host Regina G. Barber to tell the story behind one man's efforts to care for these turtles and to ensure they have a chance at another (better) life. Read more of Ari's reporting.Have an idea for a future episode? We'd love

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16:13

Elections Are One Big Math Problem

Short Wave ·

2024/11/05

It's Election Day in the United States. Across the nation, millions of ballots are being cast. But what would happen if the rules of our electoral system were changed? Certain states are about to find out. This year, several places have alternative voting systems up for consideration on their ballots, and those systems could set an example for voting reform throughout the rest of the country. Short Wave producer Hannah Chinn and host Emily Kwong dive into three voting methods that are representative

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14:29

Did Life Start In Hydrothermal Vents?

Short Wave ·

2024/11/04

How did life start on Earth? The answer is a big scientific mystery scientists are actively investigating. After talking with many scientists, host Regina G. Barber found that an abundance of water on Earth is most likely key, in some way, to the origin of life — specifically, in either deep sea hydrothermal vents or in tide pools. It's for this reason some scientists are also exploring the potential for life in so-called "water worlds" elsewhere in the solar system, like some of the moons of

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9:45

The Best (And Oldest) Tadpole Ever Discovered

Short Wave ·

2024/11/01

For years, we've been asking, "Which came first: the chicken or the egg?" Maybe what we should have been asking is, "Which came first: the frog or the tadpole?" A new paper in the journal Nature details the oldest known tadpole fossil. Ringing in 20 million years earlier than scientists previously had evidence of, this fossil might get us closer to an answer.Have another scientific discovery you want us to cover on a future episode? Email us at shortwave@npr.org — we might feature your idea on a

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14:28

The Sound Of Fear: Why Do Animals Scream?

Short Wave ·

2024/10/30

NOTE: This episode contains multiple high-pitched noises (human and other animals) that some listeners might find startling or distressing.In this episode, host Regina G. Barber and NPR correspondent Nate Rott dive into the science behind the sound of fear. Along the way, they find out what marmot shrieks, baby cries and horror movie soundtracks have in common — and what all of this tells us about ourselves.If you like this episode, check out our episode on fear and horror movies.Curious about other

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