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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

After the success of Artemis II, we at Short Wave definitely have moon fever. So, we brought NPR science correspondent Nell Greenfieldboyce onto the show to talk about where we’re headed. What will future Artemis missions look like and what needs to happen next for people to be able to walk on the moon again? We find out in this latest installment of Spacing Out – with space enthusiasts Regina G Barber and one of the hosts of All Things Considered, Scott Detrow! 

Interested in more space episodes? Check out our whole summer series, Space Camp. Or, email us your ideas for future space-focused episodes at shortwave@npr.org.

P.S. If you see this and you like the idea of formally calling this segment “Spacing Out with Gina”, email us to let us know that too! We’re still deciding.

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.

See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences.

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NASA is practicing moonwalks. When are we going back?

To solar or not to solar? That is the question for this latest episode of our monthly series Nature Quest. For listener Darcey Hughes, installing solar panels isn’t just about keeping her utilities free of fossil fuels – it’s also a way to become fully self-reliant and save some money each month. But there’s a catch: She might have to chop down a large, shading cedar tree. Today, we investigate: When is solar worth it? And is it worth the price of an old, majestic tree? 

Do YOU have a question you have about your local environment? Send us a voice memo telling us your name, where you live, and your dilemma… we may make it the next Nature Quest. We’re reachable at shortwave@npr.org.

Want to learn more about easy-to-install solar? Check out NPR climate correspondent Jeff Brady’s reporting on plug-in solar panels.

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.

See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences.

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Set up solar, or save a tree? It’s complicated

When Karyn Paringatai learned about a pattern among her family members, it changed the course of her life: A lot of people died young. As Karyn dug into her family history, she learned many Maori families, like her own, suffered from a rare form of stomach cancer called diffuse gastric cancer. Sarah Zhang recently wrote a story on this kind of cancer as a staff writer at The Atlantic. Today, she gets into all the details with Short Wave host Emily Kwong: the mutation that causes it and the life-changing decision people with the mutation have to make – risk dying or get surgery to remove their entire stomach?

Interested in more science? 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 Short Wave+ at plus.npr.org/shortwave.
Listen to Short Wave on Spotify and Apple Podcasts.

See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences.

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The mystery that led this family to get their stomachs removed

In the mid-1970s, primatologist Jane Goodall witnessed something that changed her opinion of chimpanzees forever: A four-year conflict amongst the chimpanzees she was studying in Tanzania. Chimpanzees that knew each other started killing each other. It was essentially the primate equivalent of a civil war. And now, it’s happening again: Fighting within the largest known community of chimpanzees. NPR science correspondent Nate Rott helps us break down what’s going on and what it could tell us about how human communities can fall apart. 

Read all of Nate’s story here. 

Interested in more science? 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 Short Wave+ at plus.npr.org/shortwave.

See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences.

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Why a chimp 'civil war' shows how societies collapse

Earth didn’t always have a moon. In the beginning of the solar system, when the planets were still forming, something happened that would change Earth’s night sky forever: The Moon was created! 

How did it happen? This episode, co-host Regina G. Barber searches for answers with planetary scientists. With co-host Emily Kwong, they discuss how the moon was likely made, how scientists know and what that might mean for where Earth’s water came from.

Check out Regina's reporting on hydrothermal vents.

Interested in more planetary science? 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 Short Wave+ at plus.npr.org/shortwave.

A previous version of this episode mischaracterized a scientific hypothesis. The episode incorrectly said the idea is that hydrothermal vents may have been the origin of water on Earth. In fact, the hypothesis is that life may have come from hydrothermal vents.

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Where did our moon come from?

Eating disorders are complicated illnesses that skyrocketed among teenagers during the COVID-19 pandemic. Pediatrician Eva Trujillo says they "literally rewire the brain," decrease brain size, and make it harder to concentrate and to regulate emotions. Malnutrition can slow the metabolism, impact bone density and even lead to cardiac arrest. But Eva says, with the right treatment, people can also recover fully. She's the president of the International Association of Eating Disorder Professionals and co-founder of Comenzar de Nuevo, a leading treatment facility in Latin America. Today on the show, host Emily Kwong talks about the physical and mental impacts of eating disorders with Dr. Trujillo and Moorea Friedman, a teen mental health advocate and host of the podcast Balancing Act. Plus, how to recover in a world steeped in diet culture. (encore)

Want us to cover more mental health topics? Tell us by emailing shortwave@npr.org! We'd love to know what you want to hear from us!

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.

See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences.

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Eating disorder recovery in a diet culture world

For residents of Prek Touch, Cambodia — right on the banks of the Mekong River — flooding is a regular part of life. But as those floods worsen due to climate change, it’s getting harder to adapt. Along with other flood-prone regions throughout Southeast Asia, government officials are facing an issue: how to deliver widespread weather warnings in a timely, effective way. One solution that’s working for Prek Touch? Voicemails. Today on the show, NPR climate correspondent Rebecca Hersher explains how a simple phone alert can prompt preparation, increase evacuation, and save lives.

Interested in more stories about natural disaster preparedness? 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 Short Wave+ at plus.npr.org/shortwave.

See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences.

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These voicemails save lives

Do you avoid small talk in the office, or with your neighbor in the elevator? If so, you might want to give it a chance. According to a study just published in the Journal of Personality and Social Psychology, even when participants were primed that a conversation would be boring, it turned out to be more interesting than they anticipated. Today on the show, we get into that, plus why scientists gave lobsters painkillers, and a clue about the formation of the Grand Canyon. 

Interested in more science? 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 Short Wave+ at plus.npr.org/shortwave.

See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences.

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The psychology behind why you dread small talk

Neuroscientist Paul Nuyujukian likens the brain to a stadium full of people. To eavesdrop on the crowd you could put a microphone in the middle of the stadium. But to understand the conversations you need to record individual people. He thinks about the brain the same way. To understand brain disease, he studies neurons—one at a time. And his insights are shedding light on a big global issue—stroke. The World Health Organization predicts one in four adults will have a stroke in their lifetime. Strokes can cause death, or lead to paralysis or speech problems. But there’s still a lot researchers don’t know about how the brain recovers from an event like a stroke. Nuyujukian directs a lab at Stanford University that studies how the brain controls movement, including after neurological events like stroke. We get into how he does this, and why he hopes his research could eventually help people who’ve been paralyzed. 

Email us your questions about the brain – or anything else to do with science at shortwave@npr.org. We may turn it into an episode in the 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.

See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences.

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A new approach to brain health, one neuron at a time

When you go to the doctor’s office, your doctor has to figure out which treatment is best for you. Physicians rely on medical research and clinical trials to make sure those treatments are safe and effective. But that research has not always been inclusive, which impacts patient care. Women and people of color were only required to be included in medical trials funded by the NIH starting in 1993. Now, studies are more inclusive – but how we study sex and gender in research is still controversial. In this episode, we unpack how medicine sorts the sexes – and why it’s not as simple as it seems.

If you liked this episode, check out our previous one unpacking biological sex. 

Interested in more science behind medicine? Email us your questions at shortwave@npr.org. 

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.

Listen to Short Wave on Spotify and Apple Podcasts.

This episode was produced by Hannah Chinn. It was edited by our showrunner, Rebecca Ramirez. Tyler Jones checked the facts. Kwesi Lee was the audio engineer.

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Is there still a gender gap in medical research?

A lot of the stuff we buy in the U.S. comes by ship — ships that use a particularly dirty kind of fuel. Now a big shipping company says it wants to go zero carbon. Climate reporter Becky Hersher tells us how some old tech might play a role and where that tech falls short. Follow Maddie on Twitter @maddie_sofia. Email the show at shortwave@npr.org. 

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Can Global Shipping Go Zero Carbon?

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