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Descubre un mundo infinito de historias

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Science Friday and WNYC Studios

Covering the outer reaches of space to the tiniest microbes in our bodies, Science Friday is the source for entertaining and educational stories about science, technology, and other cool stuff.

Science Friday

Since 1955, when Congress passed the Polio Vaccination Assistance Act, the federal government has been in the business of expanding access to vaccines. That is, until this year.

2025 has been filled with almost daily news stories about federal agencies, under the direction of Health Secretary Robert F. Kennedy Jr., casting doubts about vaccine safety, including unsubstantiated claims about links to autism. These agencies have also been taking steps that could roll back access to vaccines, including for hepatitis B and COVID-19.

But we’ve found it very hard to sort out what these talking points and recommendations mean in practice. KFF Health News journalists Jackie Fortiér and Arthur Allen join Host Flora Lichtman to discuss, one year in, what this administration’s stance on vaccines has meant practically—for vaccine access, and vaccine uptake.

Guests: Arthur Allen is senior correspondent at KFF Health News and author of Vaccine: The Controversial Story of Medicine's Greatest Lifesaver.

Jackie Fortiér is a Peggy Girshman fellow covering health policy at KFF Health News.

Transcripts for each episode are available within 1-3 days at sciencefriday.com.

Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

How Did Vaccine Policies Actually Change In 2025?

This year, comet 3I/Atlas broke into our solar system, but also the zeitgeist. This dirty snowball is a visitor from another solar system, and it’s only the third interstellar object we’ve ever spotted. And today, it's closer to us than ever before—just 170 million miles away.

Astronomy experts Stefanie Milam and Hakeem Oluseyi join Host Flora Lichtman to dish about 3I/ATLAS and how it captured the spotlight in a way that maybe no other big hunk of rock ever has.

Plus, the sun is setting on the ISS, and the plan is to eventually crash it into the ocean. But wouldn’t it be cooler to send it into deep space instead? A listener pleads his case.

Guests: Dr. Stefanie Milam is an astrochemist at NASA and a project scientist for the James Webb Space Telescope. She studies comets and interstellar objects.

Dr. Hakeem Oluseyi is an astrophysicist and CEO of the Astronomical Society of the Pacific.

Transcripts for each episode are available within 1-3 days at sciencefriday.com.

 

Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

Why Astronomers Are Excited About Comet 3I/ATLAS’ Close Approach

While on a sampling trip in California’s Lassen Volcanic National Park, researchers stopped to sample a rather boring stream on their hike to Boiling Springs Lake. But when they incubated that water sample back in the lab, they discovered an amoeba that could still move and divide at 145 F, a new record for a eukaryotic cell. Microbiologist Angela Oliverio joins Host Flora Lichtman to describe the “fire amoeba,” Incendiamoeba cascadensis.

Plus, planetary scientist Johanna Teske takes us to exoplanet TOI-561b, a far-off “wet lava ball” which was recently observed by the James Webb Space Telescope. Researchers believe that the planet has the strongest evidence yet of an atmosphere on a rocky planet outside our solar system.

Guests:
Dr. Angela Oliverio is an assistant professor in the department of biology at Syracuse University. 
Dr. Johanna Teske is a staff scientist at Carnegie Science Earth and Planets Laboratory in Washington, D.C.

Transcripts for each episode are available within 1-3 days at sciencefriday.com.

Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

‘Fire Amoeba’ Likes It Hot, And A Faraway Lava Planet

Videos of humanoid robots dancing, doing cartwheels, putting clothes in a washing machine, and serving drinks are all over social media. And tech CEOs are telling us to prepare for the forthcoming humanoid army that’s going to totally change our lives for the better.

But what’s real? Where are we with this technology? Are these humanoids robots ready to take washing the dishes off our plates, or work beside us in warehouses?

Tech journalist James Vincent became an expert on the subject when he toured humanoid robot factories and rubbed shoulders with robots themselves for a feature story he wrote for Harper’s Magazine. He joins Host Flora Lichtman with perspective on the hype.

Guest: James Vincent is a journalist who’s written for The Verge and The Guardian, and author of the book Beyond Measure: The Hidden History of Measurement. 

Transcripts for each episode are available within 1-3 days at sciencefriday.com. 

Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

What’s The Reality Behind The Humanoid Robot Hype?

It’s that time of year: the Christmas Bird Count, when birders go out in flocks to record all the birds they see in a single day. The data collected during this annual tradition gets compiled by the National Audubon Society, and helps scientists understand bird population trends across the Americas. 

If you participate in the bird count, chances are you’ll see a lot of the same birds you’d see any other day of the year—think sparrows, blue jays, blackbirds, cardinals. But that doesn’t make them any less special. So this year we’re turning our binoculars on a few (wrongfully) overlooked common birds. 

Producer Kathleen Davis talks with two of our favorite birders, author and illustrator Rosemary Mosco, and conservation scientist Corina Newsome, to share some surprising facts about birds that don’t often make it to the top of pecking order.

Guests:
Rosemary Mosco is an author, illustrator, and speaker whose work connects people with the natural world.
Corina Newsome is a birder and conservation scientist at the National Wildlife Federation, based in Atlanta, Georgia.

Transcripts for each episode are available within 1-3 days at sciencefriday.com.

 

Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

'Just' A Blue Jay? Don't Overlook These Magnificent Common Birds

It’s winter, and the SciFri team is already dreaming of warmer weather. How about a mind vacation to one of the hottest places on earth, an erupting volcano? Tamsin Mather has trekked to volcanoes in Chile, Guatemala, Italy, and beyond to learn their secrets. She joins Host Flora Lichtman to field your burning volcano questions, like what’s the deal with glass shards that look like hairballs? 

Guest: Dr. Tamsin Mather is a professor of Earth sciences at the University of Oxford in the UK.

Transcripts for each episode are available within 1-3 days at sciencefriday.com.

Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

Can We Just Throw Our Plastic Garbage Into A Volcano?

The sound of a choir performing in a cathedral is iconic for a reason. It’s this beautiful human experience: being side-by-side with other people, feeling the sound vibrate through you, reverberating around the space.

But how long has that been a part of our culture? And what role did sound play in the lives of people who lived during the Ice Age or the Stone Age? That’s the focus of a growing field of archaeology called archaeoacoustics, where researchers use the scientific tools of today to investigate the role of sound and music in the past.

To learn more, Host Flora Lichtman is joined by Margarita Díaz-Andreu, principal investigator of the Art Soundscapes project, and Rupert Till, head of the department of humanities at the University of Huddersfield in the UK.

Guests: Dr. Margarita Díaz-Andreu is an ICREA professor at the University of Barcelona in Spain and principal investigator of the Art Soundscapes project. 
Dr. Rupert Till is a professor of music and head of the department humanities at the University of Huddersfield in the UK.

Transcripts for each episode are available within 1-3 days at sciencefriday.com.

Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

How Did Ancient Humans Use The Acoustics Of Spaces Like Caves?

As the planet warms, the world’s glaciers are melting faster than snow can replenish the ice. That has implications for sea level rise, ocean currents, and global weather patterns. But collecting data at the edge of a melting glacier can be risky.

Glaciologist Erin Pettit and her colleagues are listening to the sounds melting glaciers make—from the sizzling of trapped air bubbles bursting, to the deep rumbles of underwater calving of icebergs. She joins Host Flora Lichtman to share some glacial sounds, and describe the multi-stage robot tools she uses to monitor melting ice.

Guest: Dr. Erin Pettit is a professor of geophysics and glaciology at Oregon State University.

Transcripts for each episode are available within 1-3 days at sciencefriday.com.

Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

What The Sounds Of Melting Glaciers Can Tell Us

In cancer research, the “seed and soil” hypothesis posits that the tumor is like a seed of misbehaving cells taking root in the body. Whether it grows—and where it grows—depends on the conditions, or soil. Since this hypothesis was proposed more than 100 years ago, most research and treatments have focused on the seed, or tumor. 

For nearly 50 years, Rakesh Jain has been studying the soil. But in a seed-focused field, his work was seen as wasteful and radical. Now, that very same research has led to seven FDA-approved treatments for diseases including lung and liver cancer, and earned him a National Medal of Science in 2016. Host Flora Lichtman talks with Jain about how his fringe idea led to lifesaving cancer treatments. 

Guest: Dr. Rakesh K. Jain studies the biology of tumors at Harvard Medical School and Massachusetts General Hospital as a professor of radiation oncology.

Transcripts for each episode are available within 1-3 days at sciencefriday.com.

Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

How A Fringe Idea Led To Lifesaving Cancer Treatments

For many people, bubonic plague is an illness that seems squarely situated in medieval times. But each year, a handful of human cases pop up in the western United States. Plague can be treated successfully with modern medicine. But why does it still exist, and how should we think about it both locally and globally? 

Plague researcher Viveka Vadyvaloo joins Host Flora Lichtman to talk all things spread and containment.

Guest: Dr. Viveka Vadyvaloo is a plague researcher and director of the Allen School for Global Health at Washington State University.

Transcripts for each episode are available within 1-3 days at sciencefriday.com.

 

Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

Why Is Bubonic Plague Still With Us?

In “Into the Unknown,” an astronomer explores the mysteries of the cosmos and the limits of what science can test.

What is time? If the universe is expanding, what is it expanding into? What happened just before the Big Bang?

Some of the most head-scratching ideas in physics strain the limits of what science can test. In her book Into the Unknown: The Quest to Understand the Mysteries of the Cosmos, astronomer Dr. Kelsey Johnson describes some of those concepts, and sketches out ways to try to wrap your brain around them. Johnson joins Host Ira Flatow to talk about the limits of scientific inquiry, and what mysteries lie at the limits of science.

Transcripts for each segment will be available after the show airs on sciencefriday.com.

 

Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

Are There Things That We Know We Can’t Know?

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