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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

9:29

Salty Clouds aren’t the only strange thing about this...

Short Wave ·

2026/06/26

There’s an object in space 25 times the size of Jupiter that’s stumped scientists for years. They haven’t been able to figure out if it’s a planet or a failed star. But scientists are one step closer to an answer thanks to the powerful James Webb Space Telescope. After analyzing data collected by the telescope, astronomers have uncovered unexpected new clues floating light years away from us: Salty clouds sitting in space as hot as some home ovens. And if this mystery isn’t enough, we have more to

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10:41

Did Trump's foreign aid cuts fuel the Ebola outbreak?

Short Wave ·

2026/06/24

The Ebola outbreak in the Democratic Republic of Congo is growing – and is likely larger than official numbers show. The deadly disease spreads through bodily fluids, on average killing half the people it infects. And while officially declared in May, the case numbers point to the virus circulating for months without being detected. To make matters worse, there’s not a vaccine for this specific species of ebolavirus – at least, not yet. NPR global health correspondent Jonathan Lambert has been

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12:44

What can a tornado teach us about kindness?

Short Wave ·

2026/06/23

One evening in May of 2011, tornado sirens went off in a small Missouri city called Joplin. Thousands of homes were destroyed in the tornado, about a third of the town’s 50,000 residents were displaced and around 160 people died. And in the months following the tornado, the town became known not just for the destruction, but the kindness and cooperation that led to its recovery. Scientists who have studied behavior after mass traumas say, disasters can spark an outpouring of kindness and powerful

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13:46

Inside the mysterious minds of horses

Short Wave ·

2026/06/22

Janet Jones has been fascinated by horses since childhood. She’s now a horse trainer and a neuroscientist, which allows her to explore the minds of the animals to which she’s devoted her life. She even recently wrote a book all about their brains. She says there’s an enormous gap between the way humans have relied on horses for tens of thousands of years – and what we actually know about their brains. And they have lots to teach us humans. That’s why we’re diving into science today. Interested in

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10:51

Why scientists launched two little robots to the moon

Short Wave ·

2026/06/19

Two tiny transforming robots landed on the moon! These baseball-sized bots accompanied Japan's first successful lunar lander. They rolled out of SLIM as balls and transformed into a rover. The bots cracked down the middle to reveal a little camera in the center. The halves then acted as spinning wheels that helped them waddle, bounce and roll over hard terrain as they explored. In this roundup of space news, we also get into the latest turn about how much the universe is expanding and the Earthly

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12:37

Is sewage the future of green aviation?

Short Wave ·

2026/06/17

The war in Iran has disrupted the global fuel supply. That has sent airline prices soaring and cancelled scores of flights. This got Short Wave host Emily Kwong wondering: Could another fuel source help take us to the skies? Today on the show, we explore the chemistry and cost of sustainable aviation fuel. Along the way, we highlight two initiatives to create a regional SAF supply – one in Washington and one in Pennsylvania. Interested in more stories about the future of flying? Email us your

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10:21

Could air pollution make your memory worse?

Short Wave ·

2026/06/16

Summer is here, your windows are open and the smell of…car exhaust and the latest wildfire are wafting in. This air pollution is harmful to almost every organ, including the brain. Today on Short Wave, we talk about one way air pollution may cloud your memory.Interested in more episodes about how where we live affects us? Email us your question at shortwave@npr.org and we may turn it into an episode!Listen to every episode of Short Wave sponsor-free and support our work at NPR by signing up for

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10:29

Inside the lab taste-testing the world's chocolate

Short Wave ·

2026/06/15

Could standardizing chocolate help small-scale farmers? Chocolate scientist Julien Simonis thinks it could help persuade consumers to pay for higher quality chocolate, in turn helping out these growers. Every cacao bean is different, and for a long time, there wasn't a standard way of comparing the quality of chocolate. But in 2009, a sustainable agriculture nonprofit started a program called Cacao of Excellence. The goal was to develop a standard way of evaluating cacao just like those sommelier’s

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9:30

Why your sunscreen is finally getting a major upgrade

Short Wave ·

2026/06/12

Until this week, the United States hadn’t approved a new sunscreen ingredient in over 20 years. That changed Tuesday, when the FDA approved a new chemical for U.S. sunscreens. It’s called bemotrizinol, and NPR science correspondent Maria Godoy joins us to tell us all about it — including the soonest it’s expected to hit shelves.Interested in more science news? 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

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11:26

How a single flu shot could protect you for decades

Short Wave ·

2026/06/10

Every year, tens of millions of people in the U.S. get the flu vaccine. That’s because the virus changes year-to-year and protection only lasts around six months. Adolfo Garcia-Sastre wants to change that. He’s one scientist working on a universal flu vaccine that could provide decades of protection against all flu illnesses – but only if his team can find the resources that disappeared when U.S. funding dipped.If you liked this episode, listen to our episode on a vaccine trial that could end

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14:12

Your DNA is changing all the time. Here’s why

Short Wave ·

2026/06/09

We tend to think of the DNA strands that contain our genetic code as consistent, stable units. But in reality, the cells that make up our bodies are constantly replicating and changing. Even as you read this sentence, in fact, the genes within your cells are mutating. So, what causes these mutations and what’s the impact? Science writer Roxanne Khamsi examines the answers in her new book, Beyond Inheritance. Today on the show, she gets into how scientists examine these mutations, how they’ve shifted

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14:17

Inner monologues are still a mystery

Short Wave ·

2026/06/08

Emily Kwong is pretty sure she lacks an inner monologue, while the inner monologue of producer Rachel Carlson won’t stop chatting. But how well can a person know their inner self? And what does science have to say about it? We dig in in this encore episode of Short Wave.To learn more about Charles Fernyhough’s research on voice hearing, visit the project website. If you liked this episode, check out our episode on when your brain is actually an "adult."Interested in more science inside your

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13:38

Prepare to be baffled by what we don't know about eels

Short Wave ·

2026/06/05

More than a century ago, all that people knew about European eels was that they lived in the rivers and streams for decades — until they swam out to the ocean and never returned. Eventually, tiny eels would show up and the cycle would start again. Where did the adult eels go? Where did the baby eels come from? Did they even reproduce at all or just spontaneously emerge into being? Science now has some — but not all — of the answers to these questions. Today on the show, Regina G. Barber talks to

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9:26

This common garden plant summons wasps as bodyguards

Short Wave ·

2026/06/03

In our latest science news roundup: how nature adapts, for better or worse. When faced with pests, plants may not be able to run away – but that doesn’t mean they’re defenseless. Some have thorns or spines, others have poisonous leaves or berries, and still others have…elaborate chemical defense alarm systems? In a recent study, researchers discovered that the common bean plant, P. vulgaris, has a particularly innovative response to hungry caterpillars: a compound in the caterpillar's spit causes

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12:12

Why are scientists planting tiny forests in big cities?

Short Wave ·

2026/06/02

Healthy forests help combat climate change, provide humans with drinking water and even improve mental and physical health. But it’s hard to imagine an entire forest in the middle of a big city. That’s where micro-forests come into play — public forests on a smaller scale, filled with native plants. They exist around the world, and producer Rachel Carlson went to visit the largest micro-forest in California in this encore episode. She joins host Emily Kwong to chat about what she saw. Interested in

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12:48

Why you can't stop scrolling: the science of 'dark flow'

Short Wave ·

2026/06/01

You pick up your phone to do one quick task, and suddenly 20 minutes have flown by without you even noticing. How do apps do that to you? Science journalist Michaeleen Doucleff felt like her phone had superglue on it, holding her on it for hours each day while draining her of time and energy. Turns out, that feeling isn’t accidental. In her new book, Dopamine Kids, Michaeleen describes four features that tech companies add to apps to keep us scrolling for as long as possible. She’s sharing this

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9:47

This distant planet has wild weather and gemstone clouds

Short Wave ·

2026/05/29

For many astronomers and astrophysicists there are two distinct, important periods: before the James Webb Space Telescope – and after. It has powered many scientific discoveries since it came online, including two at the heart of this episode: insights into one of Neptune’s moons and a “hot Jupiter” exoplanet orbiting another star. This exoplanet has a strange weather system with high winds and cloud coverage only on one side of the planet. Fill in some of the scientific gaps about our solar system

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11:59

Should we reengineer the world's deadliest animal?

Short Wave ·

2026/05/27

The most ferocious predator for us humans is actually quite small: the mosquito. They are hungry for blood, spreading diseases like malaria, yellow fever and dengue – and picking up new ones all the time. But what if we could wipe out the mosquito? Gene-editing technology could do it, potentially saving millions of lives. But it comes with serious potential for risk. Which begs the question: Should we get to decide when humanity rewrites nature? Here to discuss that is Ben Bradford, the host of a

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11:52

Is it getting windier?

Short Wave ·

2026/05/26

Is it getting windier? Long-time listener Barry Zalph thinks it is, at least in Louisville. And he’s not the only one. Redditors and local reporters have noticed a recent uptick in the region’s windstorms, too. But does that point to any larger trends in windiness? And if so, what could be causing it? We talked to meteorologist and extreme weather specialist Scott Gunter to find out. Plus, we dig into whether Tornado Alley is shifting into Kentucky as the climate warms. This episode is part of

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13:06

The magic — and science — of synchronous fireflies

Short Wave ·

2026/05/25

Every year for two weeks between mid-May and mid-June, Congaree National Park in South Carolina is home to a fairy-tale-like display of flashing lights. These rhythmic performances happen all because of thousands of fireflies, flashing their belly lanterns at exactly the same time. According to the National Park Service, there are just three species of these synchronous fireflies in North America, making the experience all the more magical for the lucky visitors who get the chance to see them

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1,572 results

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