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PODCAST

Science Friday

Science Friday, as heard on PRI, is a weekly discussion of the latest news in science, technology, health, and the environment hosted by Ira Flatow. Ira interviews scientists, authors, and policymakers, and listeners can call in and ask questions as well.

society & culture

All Episodes

18:28

972: Making Sense Of Federal Cuts To Science—And What...

Science Friday ·

2025/02/24

Last week, some 3,500 people from across scientific fields gathered in Boston for the annual meeting of the American Association for the Advancement of Science (AAAS). The organization’s CEO, Dr. Sudip Parikh, gave a rousing speech to attendees. “Destruction for the ill-conceived notion of cutting costs didn’t put an American on the moon, and it didn’t wipe smallpox from the face of the Earth,” Parikh said in opening remarks. He was referring, of course, to the huge funding cuts and mass firings

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21:04

971: Tomb Of Egyptian King Unearthed | Why The...

Science Friday ·

2025/02/21

Finding the original tomb of the royal is one of the most significant developments in Egyptian archeology in recent history. Also, a video of a gloriously creepy anglerfish inspired tears and poetry online. But why was this deep-sea dweller near the surface at all? Royal Tomb Of Egyptian King Thutmose II Unearthed A British-Egyptian team has made one of the most significant Egyptian archeological finds in recent history: the tomb of pharaoh King Thutmose II, who ruled sometime between 2000 and 1001

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18:32

968: Adventures In Science At The Icy ‘Ends Of The...

Science Friday ·

2025/02/18

The North and South Poles, also known as Earth’s iceboxes, help cool the planet, store fresh water, influence weather patterns, and more. They’re also the fastest warming places on Earth.A new book called Ends of The Earth: Journeys to the Polar Regions in Search of Life, the Cosmos, and Our Future illustrates the wonders of Antarctica and the Arctic—and the lengths scientists go to to study them before it’s too late. Host Ira Flatow talks with author Dr. Neil Shubin, an evolutionary biologist at

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24:36

967: FDA Approves A New, Non-Opioid Painkiller |...

Science Friday ·

2025/02/17

It’s the first FDA approval for a pain medication in 25 years. How does the drug work, and who is it for? Also, non-mixing layers of water and hydrocarbons thousands of miles deep could explain the icy planets’ strange magnetic fields. The FDA Approves A New, Non-Opioid Painkiller In January, the Food and Drug Administration approved a new pain medicine called Journavx (suzetrigine), made by Vertex Pharmaceuticals. It’s the first time in 25 years the agency has given the green light to a new

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18:48

964: Investigating Fraud At The Heart Of Alzheimer’s...

Science Friday ·

2025/02/12

Every year, billions of dollars are funneled into Alzheimer’s research. And yet, so far, there’s no treatment that’s been able to reverse the disease, or even meaningfully slow the cognitive decline of patients.Part of the reason is that the disease is complex, and brain disorders are notoriously difficult to understand. But in a new book, an investigative science reporter makes the case that there’s another reason progress toward Alzheimer’s treatments has stalled: scientific fraud. Host Flora

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17:52

963: Managing Wildfires Using A Centuries-Old...

Science Friday ·

2025/02/11

In late September, firefighters in flame-resistant Nomex were strung out along a fireline. It ran midslope through a pine and hardwood forest above the Klamath River and the small northern California town of Orleans. Several members of the Karuk tribe were laying down strands of fire with drip torches. Aja Conrad, who runs the tribal natural resource department’s environmental education field institute, was the firing boss trainee. She kept a close eye as the strips burned together and smoke filled

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18:50

962: Can Vaping Help You Quit Cigarettes? What Are...

Science Friday ·

2025/02/10

The harms of smoking cigarettes are pretty clear. Smoking causes cancer as well as heart and lung diseases, and it’s the leading cause of preventable death in the United States. When it comes to vaping, or electronic cigarettes, the risks are a bit more tricky to parse, especially if you read media reports about them. The outbreak of Vaping Use-Associated Lung Injury, also known as EVALI, in 2019 and 2020 made things even more confusing. The founders of Juul, the company that mainstreamed vaping in

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18:41

958: Building Blocks Of Life Found On Asteroid Bennu

Science Friday ·

2025/02/04

About four and a half years ago, a spacecraft called OSIRIS-REx touched down on the surface of an asteroid called Bennu. It drilled down and scooped up samples of rock and dust and, after several years of travel, delivered those samples back to Earth.Since then, researchers around the world have been analyzing tiny bits of that asteroid dust, trying to tease out as much information as they can about what Bennu is like and where it might have come from. Two scientific papers published this week give

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18:40

957: The Toxic Aftermath Of An Urban Fire

Science Friday ·

2025/02/03

After nearly four weeks of burning, the fires in Los Angeles are almost fully contained, and cleanup is underway. But as the dust literally settles, people in LA are left with major questions, like: What is actually in the ash? What’s in the air? And how do I stay safe? Flora Lichtman talks with two experts in public health and toxic substance exposure about the chemicals left behind after an urban fire as well as what science needs to be done to fully understand the issue. She speaks with Dr. Rima

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18:49

944: Surgeon General Highlights Link Between Alcohol...

Science Friday ·

2025/01/14

Alcohol poses many risks to our health, including liver damage and driving under the influence.Now, U.S. Surgeon General Dr. Vivek Murthy has highlighted another risk of drinking alcohol: cancer. In his latest advisory, Murthy detailed the growing body of research showing that drinking alcohol can increase the risk of at least seven types of cancers, those of the mouth, throat, voice box, esophagus, breast, liver, and colon. He’s also recommended adding a warning to alcohol outlining the connection

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19:58

945: First U.S. Bird Flu Death Raises Concerns About...

Science Friday ·

2025/01/13

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

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31:11

941: What Lichen Tell Us About Ecology, Air Quality,...

Science Friday ·

2025/01/09

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

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18:44

940: Biologists Call For A Halt To ‘Mirror Life’...

Science Friday ·

2025/01/08

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

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19:37

932: The Top Dino Discoveries Of 2024 | Can Spiking...

Science Friday ·

2024/12/25

To wrap up 2024, science writer Riley Black shares her favorite paleontology discoveries of the year. And, if treated properly, even old-fashioned eggnog made with cream and raw eggs can be a safe holiday beverage.The Most Exciting Dino Discoveries Of 2024 December is, traditionally, a time to reflect on the events of the past year—including dinosaur discoveries. In 2024, researchers learned more about T. rex and the spiky tails of stegosaurs as well as how dinosaurs evolved, lived, and more. For

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18:44

928: How Blind Women In India Detect Early Breast...

Science Friday ·

2024/12/19

A program trains women as tactile medical examiners to identify tumors before they show up on imaging scans. And, in a materials science discovery, scientists made a liquid silk solution that hardens and picks up objects—not unlike Spider-Man’s web.How Blind Women In India Are Detecting Early Breast Cancer Breast cancer is the second most common cancer worldwide, just behind lung cancer. And the earlier a breast tumor is found, the more likely it is that the person survives their diagnosis. An

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18:55

927: 8.5 Hours Of Daily Sitting Linked To Higher BMI...

Science Friday ·

2024/12/18

Sitting is a big part of modern life. Many people work at a desk all day, have long commutes, or at least enjoy some time relaxing on the couch at the end of the day. But sitting has gained a reputation as being bad for us—with some going so far as to call it “the new smoking.”A recent study in the journal PLOS One sheds more light on just how much sitting is too much, using a cohort of more than 1,000 young adults, including 730 twins. The results showed that sitting for more than about eight and

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19:56

926: The Accidental Discovery That Gave Us ‘Forever...

Science Friday ·

2024/12/17

The Accidental Discovery That Gave Us ‘Forever Chemicals’When it comes to PFAS chemicals—known as “forever chemicals”—we often hear that they’re used in nonstick coatings, flame retardants, and stain repellants. But those examples can hide the truth of just how widespread their use has been in modern life. A new season of the “Hazard NJ” podcast looks at the origin story of PFAS chemicals, and the accidental discovery of PTFE—aka Teflon—in a DuPont laboratory in southern New Jersey. “Hazard NJ”

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18:48

925: How Empire and Environmental Destruction Go...

Science Friday ·

2024/12/16

“The Burning Earth” examines over 800 years of history to demonstrate how violence against people and the planet are one and the same. Also, the host of the “Hazard NJ” podcast talks about the origins of PFAS “forever chemicals” and their impact on New Jersey residents. How Empire and Environmental Destruction Go Hand-In-Hand A new book called The Burning Earth: A History takes on a massive question: How did we get here? “Here” being this point in environmental history and decades deep into the

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25:59

924: The Universe Is Expanding Faster Than Expected |...

Science Friday ·

2024/12/13

The effect, known as the Hubble Tension, has been confirmed by James Webb Space Telescope observations. Also, despite near daily warnings of food recalls, 2024 hasn’t been that different from previous years.The Universe Is Expanding Faster Than Expected There’s still a lot to be learned about the physics of our universe—and one of the most perplexing ideas is something called the Hubble Tension. That’s an observation, made around a decade ago, that the universe seems to be expanding faster than it

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17:12

923: You Share Your Gut Microbiome With Your Friends

Science Friday ·

2024/12/12

The microbiome, the network of tens of trillions of microbes that live in and on our bodies, helps us digest food and protects us from diseases. And depending on what species of bacteria you have, your microbiome could impact your stress response, decision-making, and how likely you are to develop arthritis and depression.Scientists have known that your microbiome is partially shaped by your environment, and the people you spend your time with. But they haven’t had a lot of clarity on how exactly

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