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Short Wave

Short Wave

By: NPR
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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/shortwaveCopyright 2019-2025 NPR - For Personal Use Only Astronomy Astronomy & Space Science Biological Sciences Politics & Government Science
Episodes
  • Prepare to be baffled by what we don't know about eels

    Prepare to be baffled by what we don't know about eels
    Jun 5 2026
    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 fish physiologist Arjan Palstra about this mystery and how close scientists are to solving it.

    If you liked this episode, check out our episode on the Pacific lamprey.

    Interested in more science mysteries? 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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    14 mins
  • This common garden plant summons wasps as bodyguards

    This common garden plant summons wasps as bodyguards
    Jun 3 2026
    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 the plants to release a chemical signal that attracts wasps. Those wasps then eat the caterpillars or lay eggs in their bodies, effectively removing the threat. Today on the show, we’re diving into plant science and a round of other new scientific studies with All Things Considered host Sacha Pfeiffer.

    If you're interested in the fibermaxxing episode Han mentioned, check it out here.

    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.

    NPR Privacy Policy
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    9 mins
  • Why are scientists planting tiny forests in big cities?

    Why are scientists planting tiny forests in big cities?
    Jun 2 2026
    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 more of the science behind urban nature? 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.

    NPR Privacy Policy
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    12 mins
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