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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

It’s been an exciting and hectic year in science discovery and innovation. We’ve reported on stories from across many fields of science—from city climate plans and panda conservation to AI energy consumption and the spread of bird flu.

Earlier this month, Ira sat down in front of a live audience at The Greene Space in New York City with Drs. Céline Gounder, Jackie Faherty, and Kevin Reed, three researchers from different areas of science. Together, they reflected on the most exciting discoveries in their fields, important stories you might have missed, and what they're looking forward to in 2025.

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.

Health, Astronomy, And Climate Experts On 2024’s Coolest Science

Today, we’re taking time to reflect on all that 2024 brought us in the world of science, from the total solar eclipse in April to the demise of the Ingenuity helicopter on Mars and the rise of the blockbuster GLP-1 weight-loss medications. SciFri producers Kathleen Davis and Charles Bergquist join Ira to wrap up the year in science, in a conversation recorded in a live event at WNYC’s Greene Space.

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

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The Science That Captivated SciFri’s Reporters In 2024

Few living scientists are as iconic as Dr. Jane Goodall. The legendary primatologist spent decades working with chimpanzees in Tanzania’s Gombe National Park. More recently, Goodall has devoted her time to advocating for conservation, not just in Africa, but worldwide.

Ira spoke with Goodall in 2002, after she had published her book The Ten Trusts: What We Must Do to Care for the Animals, and an IMAX film about her work with chimpanzees had just been released.

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

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Jane Goodall On Life Among Chimpanzees

Researchers have projected that by the end of the century, days where snow covers the ground will virtually disappear in the United States, except for in very high mountains like the Rockies. This would affect entire ecosystems, disrupting animals and plants that live beneath the snow and increasing flooding and runoff.

Ira talks with Sophie Bushwick, senior news editor at New Scientist, about the latest snow projections and other top science news of the week, including the discovery of an ancient piece of clothing, how blinking can give you a “cognitive break,” and how dolphins could be using their teeth to improve hearing.

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.

Scientists Predict Loss Of Deep Snow In Most Of U.S.

This winter marks the 125th year of Audubon’s Christmas Bird Count, in which bird nerds across the Western Hemisphere venture outside to record all the birds they see and hear.

Scientists use that data to understand how birds are faring, where they’re moving, and what they’re up to when it’s not breeding season. With 125 years under its belt, the Christmas Bird Count is the longest-running community science program in the world.

How do scientists use this data? And what have they learned in those 125 years? Ira Flatow talks with Dr. Brooke Bateman, senior director of climate and community science at the National Audubon Society, and Dr. Janet Ng, wildlife biologist at Environment and Climate Change Canada in Regina, Canada.

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.

What Scientists Have Learned From 125 Years Of Bird Counts

Each year, the journalists at the MIT Technology Review publish a list of 10 breakthrough technologies: these are things poised to hit a tipping point, and potentially change the way the world works. 

Unsurprisingly, artificial intelligence remains a big breakthrough. While 2024 was the year of large learning models, small learning models top Technology Review’s list this year. These smaller models are more accessible, efficient, and could be better for the climate than their larger counterparts. 

Also on the list is generative AI search, which is already implemented by Google with its Gemini language model. A new HIV medication called Lenacapavir, which has been shown to be incredibly effective in trials, is also on the list, along with cleaner, alternative jet fuels.

Joining Ira to talk through these and other items on the list is Amy Nordrum, executive editor of operations at MIT Technology Review based in Boston, Massachusetts. 

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

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The Breakthrough Technologies To Watch In 2025

You’re probably familiar with the concept of handedness—a glove made for your left hand looks basically like the one for your right hand, but won’t fit—it’s a mirror image. Many of life’s important molecules, including proteins and DNA, are chiral, meaning they can exist in either a left-handed or a right-handed form. But on Earth, nature only uses one version or the other in living organisms. Your proteins, for example, are all the left-handed version, while your DNA is all right-handed.

With advances in synthetic biology, it could be possible to build an artificial organism that flips that shape, having right-handed proteins and left-handed DNA. Writing in the journal Science, an international group of researchers recently cautioned against anyone trying to create that sort of so-called mirror life, saying that it poses the threat of “unprecedented and irreversible harm” to human health and global ecosystems.

Dr. Drew Endy, a synthetic biology researcher at Stanford University and one of the authors of that warning, joins Ira to discuss the concept of mirror life and why a group of researchers felt compelled to call for a halt to mirror life experiments.

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

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Biologists Call For A Halt To ‘Mirror Life’ Research

Last October, Ira Flatow took a trip to the World Forestry Center in Portland, Oregon, for a daylong exploration of lichen—the fuzzy growths often found on trees, roofs, and gravestones. Ira sat down in front of a sold-out room with Dr. Hannah Prather, postdoctoral researcher and visiting assistant professor of biology at Reed College, and Dr. Jesse Miller, lead botanist for the Washington Natural Heritage Program. From their crucial role in ecosystems as indicators of air quality to their striking colors and forms, we’ve really taken a lichen to these amazing organisms.

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

 

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What Lichen Tell Us About Ecology, Air Quality, And More

After her SciFri internship 20 years ago, Flora went on to become a beloved science journalist, video producer, and podcaster. Now she’s back! Also, several different fires are causing extreme damage in the Los Angeles area. Strong Santa Ana winds are one factor behind their rapid spread.
Science Friday Now Has Two Hosts: Meet Flora Lichtman!
Big news! Science Friday now has two hosts—Ira Flatow, the program’s founder, and veteran science journalist Flora Lichtman. Going forward, you’ll hear both of them regularly on the air and on our podcast. 

Flora joins Ira to introduce herself and talk about her background, from her start as an intern at Science Friday 20 years ago to her role as a video producer, then a writer for Bill Nye, and as creator of the podcast “Every Little Thing.”
Los Angeles Wildfires Burn For Days, Stoked By Santa Ana Winds
This week, the Los Angeles area has been battered by at least five separate wildfires. Tens of thousands of acres have burned, and thousands of people have been forced to flee their homes. Fire experts had warned on January 2 that conditions were ideal for wildfires in parts of Southern California. One factor that has helped these fires spread rapidly? Unusually strong Santa Ana winds.

On the other side of the country, Winter Storm Blair has caused freezing temperatures and up to a foot of snow across the Midwest and up into the East Coast, putting more than 60 million people under weather alerts.

Joining Ira Flatow to discuss these and other top stories of the week is Umair Irfan, science correspondent at Vox, based in Washington, D.C.

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.

Meet Flora Lichtman | Los Angeles Wildfires Stoked By Santa Ana Winds

On January 6, the U.S. reported its first human death from the bird flu. According to the CDC, more than 60 people were diagnosed with bird flu in the US last year, up from just one case in 2022.

If you look at global cases over the last two decades, of the nearly 900 reported cases in people, roughly half the patients died.

H5N1 avian influenza has been circulating in birds—and even some mammals—for years. But in the spring of 2024, the virus turned up in dairy cattle. Since then, over 900 herds have been affected, according to the CDC.

This might bring back memories from early in the COVID-19 pandemic—but is that the right way to think about this? Should we be concerned? And what steps should we be taking?

To unpack this, host Flora Lichtman talks with Dr. Seema Lakdawala, co-director for the Center for Transmission of Airborne Pathogens and associate professor studying influenza viruses at Emory University in Atlanta, Georgia; and Dr. Richard Webby, director of the World Health Organization Collaborating Centre for Studies on the Ecology of Influenza in Animals and Birds and virologist at St. Jude’s Children’s Research Hospital in Memphis, Tennessee.

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.

First U.S. Bird Flu Death Raises Concerns About Preparedness

AI is not just for automating tasks or coming up with new recipe ideas. Increasingly, people are turning to AI chatbots for companionship. Roughly half a billion people worldwide have downloaded chatbots designed specifically to provide users with emotional and social support. And while these human-chatbot relationships might ease loneliness or simply be fun to have, these digital friends can also cause real harm by encouraging dangerous or inappropriate behavior—especially in children or teens.

To explore the emerging world of AI companion chatbots, Host Flora Lichtman is joined by freelance science reporter David Adam, who recently wrote about the effect of AI companions on mental health for Nature magazine; and Rose Guingrich, a psychology researcher studying interactions between humans and AI at Princeton University.

Guests: 
David Adam is a freelance science reporter based in London.
Rose Guingrich is a researcher in the department of psychology at Princeton 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 Does It Mean To Have A Chatbot Companion?

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