Short Wave

• Is The Milky Way On A Collision Course?

  The Andromeda galaxy lies just beyond (...OK, about 2.5 million light-years beyond) our galaxy, the Milky Way. For the past hundred years or so, scientists thought these galaxies existed in a long-term dance of doom — destined to crash into one another and combine into one big galactic soup. But today on the show, Regina and computational astrophysicist Arpit Arora explain why a recent paper out in the journal Nature Astronomy suggests this cosmic game of bumper cars may never come to a head at all. Interested in more space episodes? Email us your question at [email protected] 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.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy

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• When Eavesdropping Pays Off

  Why did the ornithologist strap a taxidermy badger to a remote controlled car and drive it around the prairie? To interrogate the secret world of animal eavesdropping in the grasslands, of course! Today on the show, we travel to the most imperiled ecosystem on the planet to unravel a prairie mystery and find out why prairie dogs are grassland engineers worth keeping tabs on.Special thanks to Andrew Spencer and the Cornell Lab of Ornithology for providing the Long-billed Curlew call recording, and to American Prairie for providing prairie soundscape recordings.Got a question about other animal ecosystem engineers? Email us at [email protected]. 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.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy

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• The Power Grid Problem

  The U.S.'s power grid — a nearly 100-year-old network of electrical circuits — is facing increased demand and weather-related stress. What will it take to modernize?Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy

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• Why Emotions Run High For Sports Fans

  We are in the thick of multiple sports seasons: the NBA finals are happening, and baseball and soccer are in full swing. For devoted fans, emotions can run pretty high during a game. Cognitive anthropologist Dimitris Xygalatas has long been fascinated by that intensity — and how uniform it can be across fans. So, he and fellow researchers at the University of Connecticut decided to look into what exactly makes fans so deeply connected to their team and to fellow supporters. It turns out that connection may have less to do with actual gameplay and more to do with rituals. Their research was recently published in the journal Proceedings of the National Academy of Sciences.Questions about sports science? Email us at [email protected] 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.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy

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• Why Weed's Signature Scent Has Changed Over Time

  The skunky smell of cannabis may be going out of style. NPR's science correspondent Pien Huang visited the grow facility for District Cannabis, which sells weed in Washington D.C. and Maryland. On her tour, she learned why cannabis smells the way it does. Plus, how many strains have been bred — to smells like lavender, citrus and even cookies. Read more of science correspondent Pien Huang's reporting on this topic here, or check out the entire special series, "How safe is your weed?" Questions about the science behind the mysteries, events and... smells... all around us? Email us at [email protected] – we'd love to hear your ideas!Listen to Short Wave on Spotify and Apple Podcasts.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy

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