Episodes

  • Should Humans Live On Mars?

    Should Humans Live On Mars?
    Apr 21 2025
    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 enough food? They join host Regina G. Barber and explain why it might be best to stay on Earth.

    Check out Kelly and Zach Weinersmith's book A City On Mars.

    Have another space story you want us to cover on a future episode? Email us at shortwave@npr.org — we'd love to hear from you!

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    14 mins
  • Good Vibrations: How Fiddler Crabs Mate

    Good Vibrations: How Fiddler Crabs Mate
    Apr 18 2025
    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 Oxford.

    Interested in more seismic vibration communication? Send us an email at shortwave@npr.org.

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    9 mins
  • How Nature Makes A Complex Brain

    How Nature Makes A Complex Brain
    Apr 16 2025
    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 shortwave@npr.org.

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    13 mins
  • Your Allergies May Be Getting Worse

    Your Allergies May Be Getting Worse
    Apr 15 2025
    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 more of the science behind your health questions? Send us an email at shortwave@npr.org.

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    7 mins
  • All Hail The Butt Flicker

    All Hail The Butt Flicker
    Apr 14 2025
    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 butt-flicking insects is a valuable way to take science beyond the lab.

    Want to hear more about nature's superpowers? Send us an email at shortwave@npr.org.

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    12 mins
  • How Do Astronomers Find Exoplanets? Wiggles!

    How Do Astronomers Find Exoplanets? Wiggles!
    Apr 11 2025
    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 exoplanet discoveries? Send us an email at shortwave@npr.org.

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    13 mins
  • Could Psychedelics Become Tripless?

    Could Psychedelics Become Tripless?
    Apr 9 2025
    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 on psychedelics and related drugs this week by following us on Spotify and Apple Podcasts. They're the previous two episodes in our podcast feed.

    Have other questions about psychedelics and the brain? Let us know by emailing     shortwave@npr.org!

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    13 mins
  • What If You Took The "Trip" Out Of Ketamine?

    What If You Took The "Trip" Out Of Ketamine?
    Apr 8 2025
    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 psychedelics and related drugs this week by following us on Spotify and Apple Podcasts.

    Have other questions about psychedelics and the brain? Let us know by emailing     shortwave@npr.org!

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    12 mins
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