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Descubre un mundo infinito de historias

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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.

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

Short Wave

This year, quantum science and computing came up a lot. There have been broad claims that quantum science and engineering could one day help cure diseases, design new materials, optimize supply chains -- or help in other ways not yet fathomable. And, while the Trump administration has made strides to cut scientific funding, quantum research is one of two things they’ve pledged to continue investing in – along with artificial intelligence. Meanwhile, scientists have been hard at work, pushing the research to move quantum engineering from sci-fi to real-world usefulness. All of this got science correspondent Katia Riddle wondering: When will all of this effort actually pay off? She talked to a lot of scientists to figure it out -- and to figure out how much scientist really understand about quantum science. She brings everything she learned onto the show today. 

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Is The Quantum Future Here?

Want to be a top notch candidate for hosting alien life? Then there's a few key requirements you should be aware of: Ideally, you're a large object like a moon or a planet; scientists suspect you also have an atmosphere and water; plus, you should orbit your star from a nice mid-range distance — in the "Goldilocks Zone" of habitability. Until recently, you would be competing against TRAPPIST-1 e. It's a planet outside of our solar system. TRAPPIST-1 e is also only 40 light years away, rocky and the same size as Earth, which prompted researchers to investigate whether it also has an atmosphere — and the potential for alien life. A team of researchers has been investigating TRAPPIST-1 e to learn more about its potential. Their answers, recently published in the Astrophysical Journal Letters, say a lot not just about this exoplanet, but about how scientists should refocus their hunt for alien life.

Interested in more space science? Email us your question at shortwave@npr.org.

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Could This Exoplanet Harbor Life?

In the 1970’s TV show called Six Million Dollar Man, a test pilot is in a horrible accident. The show’s famous line goes, “We can rebuild him. We have the technology.” Now, in the 2025 book, Replaceable You, science writer Mary Roach explores how people have collectively lived up to the task of rebuilding human bodies when they fail, as well as all the ways we may not quite be there yet. In this episode Regina G. Barber and Mary Roach discuss three chapters of the book, get into everything from iron lungs to private parts and try to answer the question, “How replaceable are you?”

Interested in more science behind the human body? Check out our episodes on synthetic cells and the first pig kidney transplant. Email us your question at shortwave@npr.org.

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How Replaceable Are You?

More than 100 million people in the U.S. have some allergy each year. That’s about every 1 in 3 adults. For many, the fix is a bandaid: over-the-counter allergy medications. But there’s another treatment that works to lessen these reactions rather than just manage people’s symptoms, allergy shots. The treatment has been around for over a century and is still popular today. Patients have to take the shots for a few years, and it’s the closest thing science has to a cure. Host Regina G. Barber speaks with Dr. Gina Dapul-Hidalgo about how this immunotherapy works and how certain guidelines to keep your child from developing common food allergies have changed.
Interested in more science behind allergies? Check out our other episodes:

Having a food allergy? And how your broken skin barrier might be the causeSpring Allergies and what to do about themHave another topic on human biology or consumer health you want us to investigate? Email us your question at shortwave@npr.org.

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The Closest Thing To A Cure For Allergies

Thirty years ago, park rangers reintroduced grey wolves into Yellowstone National Park. They wanted to restore the ecosystem and get the elk population, which had decimated the plant community, in check. And it worked – or so the popular narrative suggests. But is it really so simple? Today on the show, we explore how the Yellowstone ecosystem has changed since wolves returned and whether those changes can really be pinned solely on wolves. Plus, how the narrative of the Yellowstone wolf legacy could affect wolf reintroduction elsewhere. (encore)

Curious about other science controversies? Email us at shortwave@npr.org.

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Controversy In Yellowstone

An estimated 5-10% of the U.S. population experiences a disorder with their TMJ, the joint that connects their jaw to their skull. The good news? Relief is possible. The secret? Go see your dentist. Today on the show, Emily talks with Justin Richer, an oral surgeon, about the diagnosis and treatment of TMJ disorders.

Got a question about your teeth or dentistry? Email us at shortwave@npr.org.

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Americans Are Not Going To The Dentist Enough

Electricity bills are on track to rise an average of 8 percent nationwide by 2030 according to a June analysis from Carnegie Mellon University and North Carolina State University. The culprits? Data centers and cryptocurrency mining. Bills could rise as much as 25 percent in places like Virginia. Science writer Dan Charles explains why electric utilities are adding the cost of data center buildings to their customers’ bills while the data companies pay nothing upfront. 

Read the full June analysis here.

To listen to more on the environmental impact of data centers, check out our two-part reported series:

- Why the true water footprint of AI is so elusive

- How tech companies could shrink AI's climate footprint

Interested in how technology affects everyday life? Email us your question at shortwave@npr.org.

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What Are AI Data Centers Doing To Your Electric Bill?

The comet 3I/ATLAS is taking a long holiday journey this year. It’s visiting from another solar system altogether. Those interstellar origins have the Internet rumor mill questioning whether 3I/ATLAS came from aliens. Co-hosts Emily Kwong and Regina G. Barber dive into that, plus what it and other interstellar comets can tell us about planets beyond our solar system.

Read more of NPR’s coverage of 3I/ATLAS. Also, if you liked this episode, check out our episodes on: 

- the physics in the film Interstellar

- why Pluto is still helpful for learning how our solar system formed

Interested in more space science? Email us your question at shortwave@npr.org.

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Why Experts Are Racing To Learn About This Interstellar Comet

Prediabetes is common in the U.S. — around 1 in 3 people have it. And many people may not know they have it. But last year, the FDA approved the first over-the-counter continuous glucose monitor. Since then, more people without diabetes have started checking their blood glucose levels. Diabetologist and University of California, San Francisco professor of medicine Dr. Sarah Kim shares the science behind blood glucose with host Emily Kwong. 

Check out more of NPR’s coverage about continuous glucose monitors.

Interested in more science of the human body? Email us your question at shortwave@npr.org.

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Who Should Track Their Blood Sugar?

How far back in evolutionary history does kissing go? Through phylogenetic analysis, an international team of scientists found that kissing was likely present in the ancestor of all apes – which lived 21 million years ago. Not only that: They were definitely kissing Neanderthals. The study was published in the journal Evolution and Human Behavior. In this news roundup, we also talk about new clues about the collision that created our moon and a moss surviving the hardships of space.

Interested in stories about human evolution? Email us your question at shortwave@npr.org.

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What’s In A Kiss? 21 Million Years Of Evolution

Descendants of trauma victims seem to have worse health outcomes. Could epigenetics help explain why? Bianca Jones Marlin and Brian Dias walk us through the field of epigenetics and its potential implications in trauma inheritance. 

You can follow Ariela Zebede on twitter @arielazebede. Email us at shortwave@npr.org.

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The Legacy of Trauma: Can Experiences Leave A Biological Imprint?

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