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Atualizado a 09/08/2017
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19/05

Why does fashion repeat in 20-year cycles? Math has the answer

Bucket hats. Low-rise jeans. Track suits. As you might’ve noticed, Y2K fashion is in right now. People say that fashion moves in 20-year cycles, and it turns out…it does! At least according to math. Host Flora Lichtman sits down with mathematician Emma Zajdela to figure out how she analyzed over 35,000 images of women's clothing dating all the way back to the 1860s to confirm this theory. Guest: Dr. Emma Zajdela is a Franco-American mathematician and science diplomacy activist. Other episodes you may enjoy: The Many, Many Ways Tuberculosis Shaped Human Life Functional Fashion From An Artist And A Caterpillar Want SciFri gear? Check out our new shop! Transcripts for each episode are available within 1-3 days at sciencefriday.com. Subscribe to this podcast. Follow our show on Instagram, TikTok, Facebook, and Bluesky @scifri and sign up for our newsletters. Got a science question that’s keeping you up at night? Call us: 877-472-4374 Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.
17/06

When music transports you to a different place

Do you ever hear a song that transports you to a specific place and time? This auditory wormhole has a name: musical daydreams. Music cognition expert Elizabeth Margulis studies why they happen, and what they tell us about our brains. She joins Host Flora Lichtman to discuss this phenomenon. Guest: Dr. Elizabeth Margulis is a professor and director of Princeton’s Music Cognition Lab. She’s also the author of “Transported: The Everyday Magic of Musical Daydreams.” Other episodes you may enjoy: A Neurologist Investigates His Own Musical Hallucinations Oliver Sacks Searched The Brain For The Origins Of Music Transcripts for each episode are available within 1-3 days at sciencefriday.com. Subscribe to this podcast. Follow our show on Instagram, TikTok, Facebook, and Bluesky @scifri and sign up for our newsletters. Got a science question that’s keeping you up at night? Call us: 877-472-4374 Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.
27/05

Pope Leo's encyclical on AI, and the Vatican science advisors

On Monday, Pope Leo XIV presented his encyclical, an open letter from the church, on AI. The 42,000-word document covers a lot of terrain—from screen time to resource extraction to job loss—but the core message is summed up in the title: “Magnifica Humanitas: On Safeguarding The Human Person In The Time Of Artificial Intelligence.” How did the pope arrive at these views? Among those advising him on issues like AI are scientists and other experts. Host Flora Lichtman talks with a member of the Vatican’s Pontifical Academy of Social Sciences, anthropologist Marcelo Suárez-Orozco, about the encyclical and what it’s like to advise the pope. Guest: Dr. Marcelo Suárez-Orozco is an anthropologist and chancellor at the University of Massachusetts Boston. Other episodes you may enjoy: How Is AI Being Used In The Iran War? An AI Leader’s Human-Centered Approach To Artificial Intelligence Transcripts for each episode are available within 1-3 days at sciencefriday.com. Subscribe to this podcast. Follow our show on Instagram, TikTok, Facebook, and Bluesky @scifri and sign up for our newsletters. Got a science question that’s keeping you up at night? Call us: 877-472-4374 Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.
-6 dias

Peering through dust clouds to the center of the galaxy

In 2020, Andrea Ghez shared the Nobel Prize for her observations of a supermassive compact object at the center of the Milky Way galaxy—an object that has all the hallmarks of a supermassive black hole. Ghez had developed techniques that allowed her to peer through galactic dust clouds with the Keck telescopes and observe the movements of stars orbiting the galactic center. Measuring their velocity and orbits provided information about the galactic core. She joins Host Flora Lichtman to talk about this game-changing discovery, what we’ve learned about the galactic center, and her own orbit in science. Guest: Dr. Andrea Ghez is a Nobel Laureate in Physics (2020) and a professor of physics & astronomy at UCLA. Other episodes you may enjoy: The Monster At The Heart Of The Milky Way A Mysterious Gas Is Discovered In The Milky Way Transcripts for each episode are available within 1-3 days at sciencefriday.com. Subscribe to this podcast. Follow our show on Instagram, TikTok, Facebook, and Bluesky @scifri and sign up for our newsletters. Got a science question that’s keeping you up at night? Call us: 877-472-4374 Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.
25/06

Maggie O'Farrell's New Novel 'Land'

Maggie O'Farrell, the celebrated author of "Hamnet," discusses her new novel, "Land." The story follows an Irish family in the wake of the potato famine. Cover art courtesy of Knopf Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.
-5 dias

Why worry about my data If I have nothing to hide?

In the last couple months, Vermont, Alabama, and Oklahoma have passed data privacy laws. Massachusetts is negotiating its own version. Meanwhile, congressional lawmakers have introduced national privacy bills that would preempt these state laws. In light of all this legislation, we’re revisiting an interview from February about how the United States’ data ecosystem makes it possible for any number of government agencies and businesses to buy our private data, from facial scans to health records to location tracking. Host Flora Lichtman talks with law professor and tech policy expert Laura Moy, who has testified in Congress about privacy laws and how data brokers profit off of personal data. Guest: Laura Moy is an associate professor of law at Georgetown Law, based in Washington, D.C. Transcripts for each episode are available within 1-3 days at sciencefriday.com. Subscribe to this podcast. Follow our show on Instagram, TikTok, Facebook, and Bluesky @scifri and sign up for our newsletters. Got a science question that’s keeping you up at night? Call us: 877-472-4374 Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.
16/07

How does a tick bite cause a red meat allergy?

For two decades, a perplexing illness has been spreading: After a lone-star tick bite, people find themselves with a severe allergic reaction to red meat. The CDC estimates up to 450,000 people in the U.S. may be affected with alpha-gal syndrome, up from just a few dozen documented cases in 2009. New research finds that in some states, more than 30% of people are positive for alpha-gal antibodies—but not all of them have the syndrome. Flora speaks with allergist Scott Commins, who has studied alpha-gal syndrome for nearly 20 years, to unpack this finding and next frontiers for treatment. Guest: Dr. Scott Commins is the William J. Yount Distinguished Professor of Medicine and associate chief for allergy and immunology at the UNC School of Medicine in Chapel Hill, North Carolina. Other episodes you may enjoy: Instead Of A Vaccine For Lyme, How About A Vaccine For Ticks? Why Don’t We Have A Vaccine For Lyme Disease? Transcripts for each episode are available within 1-3 days at sciencefriday.com. Subscribe to this podcast. Follow our show on Instagram, TikTok, Facebook, and Bluesky @scifri and sign up for our newsletters. Got a science question that’s keeping you up at night? Call us: 877-472-4374 Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.
-4 dias

Asha de Vos’ journey from deck hand to marine science leader

The tropical waters of Sri Lanka, an island off the coast of India, are home to a population of blue whales unlike any other. These whales stay put, while every other known population migrates. That discovery was made by budding scientist Asha de Vos more than 20 years ago—it made a splash, and so did she. She later became the first Sri Lankan to earn a PhD studying marine mammals, charting a new scientific path in her country. De Vos joined Host Flora Lichtman in 2025 to discuss her path into science, what it means to be the first in her field, and how she built a marine biology program from the ground up. Guest: Dr. Asha de Vos is a marine biologist and the founder and executive director of the non-profit Oceanswell. She’s based in Sri Lanka. Transcripts for each episode are available within 1-3 days at sciencefriday.com. Subscribe to this podcast. Follow our show on Instagram, TikTok, Facebook, and Bluesky @scifri and sign up for our newsletters. Got a science question that’s keeping you up at night? Call us: 877-472-4374 Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.
15/07

What will our reaction be when we discover aliens?

One of the most irresistible questions in sci-fi stories about aliens is what our reaction will be when we learn of their existence. Horror? Bewilderment? Relief? Euphoria? It’s a scenario we love to imagine again and again, like in Steven Spielberg’s recent movie, “Disclosure Day.” But how would humanity react if we learned of intelligent aliens? Can you actually study that? It turns out there’s a whole lab inside SETI, the Search for Extraterrestrial Intelligence, that is thinking about what the public response might be and how to prepare for it. Host Ira Flatow sits down with astronomer Lucian Walkowicz and philosopher-ethicist Chelsea Haramia, co-directors SETI’s Discovery and Futures Lab, to talk about the research that’s been done to answer these questions. Guests: Dr. Lucian Walkowicz is an astronomer and science advisory board member at SETI. Dr. Chelsea Haramia is a senior research fellow at the University of Bonn in Germany, and a philosopher-ethicist at SETI. Other episodes you may enjoy: How Close Are We To Answers About Aliens? The Human Obsession With Aliens Goes Way, Way Back Transcripts for each episode are available within 1-3 days at sciencefriday.com. Subscribe to this podcast. Follow our show on Instagram, TikTok, Facebook, and Bluesky @scifri and sign up for our newsletters. Got a science question that’s keeping you up at night? Call us: 877-472-4374 Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.
20/07

How do you piece together what life was like in Pompeii?

Pompeii is known for its disastrous end with the eruption of Mount Vesuvius, but for archeologists, what came before is just as interesting. Researchers are using artifacts left behind in the remarkably well-preserved Roman city to piece together what life was like for the thousands of people who lived there 2,000 years ago. A new book and television show analyze some of these clues to tell the stories of the ordinary people who faced this extraordinary event. Flora speaks with archaeobotanist Jess Venner, author of “The Lost Voices of Pompeii,” and actor Tom Hiddleston, host of National Geographic’s “Pompeii: Out of Time with Tom Hiddleston.” Read an excerpt from “The Lost Voices of Pompeii: Life and Death on Pompeii’s Final Day” Watch the interview on YouTube. Guests: Dr. Jess Venner is an archaeobotanist at the University of Oxford and author of “The Lost Voices of Pompeii.” Tom Hiddleston is an actor and producer, and host of National Geographic’s “Pompeii: Out of Time with Tom Hiddleston.” Transcripts for each episode are available within 1-3 days at sciencefriday.com. Subscribe to this podcast. Follow our show on Instagram, TikTok, Facebook, and Bluesky @scifri and sign up for our newsletters. Got a science question that’s keeping you up at night? Call us: 877-472-4374 Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

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