Short Wave

• The Algae That Thrive in Arctic Darkness

  Microalgae are tiny organisms that convert energy from sunlight into fuel. The arctic ecosystem depends on them. In springtime, the algae bloom brilliant shades of green and draw tiny crustaceans, fish, birds and more to arctic waters. But what happens in wintertime, when the sun goes down and darkness reins for months? In the depths of the polar night, biogeochemist Clara Hoppe has found evidence that some microalgae are still ready to photosynthesize. Today on the show: how tiny microalgae limbo for their lives and come out more powerful than scientists ever imagined. Want to hear more stories of nature pushing the boundaries of what scientists previously thought possible? Let us know by emailing 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.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy

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• Climate Change + Baseball = More Home Runs

  Baseball season is nigh! From Yankee stadium in New York to Dodger stadium in Los Angeles, teams around the country will face off Thursday to mark the start of the 2025 MLB season. And when we here at Short Wave think of baseball, we naturally think of physics. To get the inside scoop on the physics of baseball, like how to hit a home run, we talk to Frederic Bertley, CEO and President of the Center of Science and Industry, a science museum in Columbus, Ohio. In this encore episode, he also talks to host Regina G. Barber about how climate change is affecting the game.Interested in the science of other sports? Email us at shortwave@npr.org — we'd love to hear from you.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy

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• What Scientists Got Wrong About COVID-19

  Early in the beginning of the COVID-19 pandemic, scientists predicted the SARS-CoV-2 virus would mutate slowly. They were wrong. Hundreds of thousands of viral mutations and multiple seasonal waves later, we now know why. The answer changes researchers' understanding of viral evolution — and it could help predict the evolution of other viruses in the future. Emily talks about it all with Sarah Zhang, a health writer for The Atlantic. Want to hear more virology or human biology stories? Let us know by emailing shortwave@npr.org.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy

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• What Experts Say about ADHD-Tok

  Ever diagnosed yourself with a mental health disorder based on a TikTok video? If so, you're not alone. "I personally don't think that there's anything more human than wanting to understand yourself and wanting to understand your own experiences," says Vasileia Karasavva. Vasileia is the lead author of a paper published Wednesday in the journal PLOS One that gets into why this kind of self-diagnosis can be such a double-edged sword.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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• What's In Your Personal Care Products?

  Ever scan the ingredient list of your favorite personal care products like shampoos or lotions and think, what are these complicated chemicals? And are any of them bad for me? We definitely have. And our colleagues at NPR's Life Kit did one step better: They parlayed their anxiety spiral into a helpful guide on the safety of personal care products. So today, Gina talks to Life Kit's Marielle Segarra about some of the top chemicals of concern, including parabens and phthalates.Click here to hear the full Life Kit guide — including how to audit your go-to products.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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