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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

19:11

726: A New Book Puts ‘Math in Drag’

Science Friday ·

2024/03/14

It’s a common refrain from elementary school to adulthood: “I’m bad at math.” It’s a hard subject for a lot of people, and it has a reputation for being—let’s face it—boring. Math isn’t taught in a flashy way in schools, and its emphasis on memorization for key concepts like multiplication tables and equations can discourage students.It’s not hard to understand why: Math has long been seen as a boy’s club, and a straight, cis boy’s club at that. But Kyne Santos, a drag queen based in Kitchener,

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17:37

725: With This Rare Disorder, No Amount Of Sleep Is...

Science Friday ·

2024/03/13

Humans need sufficient sleep to function. The conventional wisdom is that we need around 8 hours each night to be at peak performance.But for people with idiopathic hypersomnia, or IH, no amount of sleep can shake a profound feeling of sleepiness. Some can sleep for over 24 hours, despite using stimulants and multiple alarm clocks. Others fall asleep while driving or doing other daily activities. IH is rare. It affects just a small fraction of 1% of people, and the underlying cause is unknown. Now,

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12:47

727: Could This Be The End Of Voyager 1?

Science Friday ·

2024/03/08

In 1977, NASA launched Voyager 1 and 2. Their mission? To explore the farthest reaches of our galaxy. Their missions were only supposed to last about four years, but it’s been almost 50. They’re now in interstellar space, navigating the region between stars.But since November, Voyager 1 has been sending unintelligible data back to Earth, raising concerns that it could be nearing the end of its mission. Ira talks with Maggie Koerth, science writer and editorial lead at Carbon Plan, about Voyager 1

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18:29

723: What It Takes To Care For The US Nuclear Arsenal

Science Friday ·

2024/03/07

For many people in the US, the threat of nuclear weapons is out of sight and out of mind. But the nuclear complex is alive and well. In fact, the state of nuclear weapons is evolving in the US. The United States, among other countries, is giving its nuclear arsenal—which contains about 5,000 weapons—a makeover. This modernization costs around $50 billion a year, which will amount to more than $1.5 trillion over the next few decades. With the Treaty on the Non-Proliferation of Nuclear Weapons in

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19:19

722: A Young Scientist Uplifts The Needs Of...

Science Friday ·

2024/03/06

"I heard elders talk about 'the shakes,' but I now know that language reflects deep historical inequities that have denied us access to healthcare, knowledge, and research that could help us alleviate burdens and strengthen our health—enough with the shakes!" —Senegal Alfred Mabry, in Cell Parkinson’s disease is the second most common neurodegenerative disorder in the United States. According to a 2022 study, some 90,000 people a year in the US are diagnosed with Parkinson’s. It’s a progressive

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25:45

721: Snakes Are Evolutionary Superstars | Whale Song...

Science Friday ·

2024/03/05

In the trees, through the water, and under the dirt: Snakes evolve faster than their lizard relatives, allowing them to occupy diverse niches. Also, researchers are working to understand just how baleen whales are able to produce their haunting songs. Snakes Are Evolutionary Superstars Love ‘em or hate ‘em, new research shows that snakes deserve our recognition as evolutionary superstars. The study, published last week in the journal Science, found that snakes evolve faster than other reptiles,

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18:30

720: What’s Behind The Measles Outbreak In Florida?

Science Friday ·

2024/03/04

The United States eliminated measles back in 2000, but it still pops up every now and then. According to the Centers for Disease Control and Prevention, a total of 35 measles cases across 15 states had been reported this year as of February 22. Early last month, a measles outbreak began at an elementary school in Broward County, in southern Florida. As of February 28, the Florida Department of Health reported 9 cases for Broward County—out of 10 for the whole state. Measles is one of the most

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18:34

717: Blood In The Water: Shark Smell Put To The Test

Science Friday ·

2024/02/28

Sharks are somewhat notorious for their sense of smell and ability to sniff out prey deep in the ocean. There’s that persistent myth that sharks can smell a drop of human blood from a mile away. But that’s not exactly true. While sharks can smell human blood, they are more interested in sniffing out what’s for dinner: other fish, crustaceans, and molluscs. Ocean currents also play a role in how far a scent can travel. However, shark noses are just as powerful as any other fish in the sea.SciFri

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25:21

714: How Trivia Experts Recall Facts | One Ant...

Science Friday ·

2024/02/27

How can some people recall random facts so easily? It may have to do with what else they remember about the moment they learned the information. Also, in Kenya, an invading ant species pushed out ants that protected acacia trees. That had cascading effects for elephants, zebras, lions, and buffalo. A ‘Jeopardy!’ Winner Studied How Trivia Experts Recall Facts When contestants play “Jeopardy!,” it can be amazing to see how quickly they seem to recall even the most random, obscure facts. One multi-time

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18:03

716: OpenAI’s New Product Makes Incredibly Realistic...

Science Friday ·

2024/02/26

OpenAI, the company behind the chatbot ChatGPT and the image generator DALL-E, unveiled its newest generative AI product last week, called Sora, which can produce extremely realistic video from just a text prompt. In one example released by the company, viewers follow a drone’s-eye view of a couple walking hand-in-hand through snowy Tokyo streets. In another, a woman tosses and turns in bed as her cat paws at her. Unless you’re an eagle-eyed AI expert, it’s nearly impossible to distinguish these

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19:41

715: Private Spacecraft Makes Historic Moon Landing |...

Science Friday ·

2024/02/23

Private Spacecraft Makes Historic Moon Landing Thursday evening, the Odysseus moon lander successfully soft-landed on the moon, becoming the first U.S spacecraft to do so in over 50 years. The lander mission wasn’t created by NASA or another government space agency, but by the company Intuitive Machines, making it the first commercial mission to successfully soft-land on the surface of the moon. The mission was part of a NASA program called the Commercial Lunar Payload Services program, which aims

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17:38

713: Making Chemistry More Accessible To Blind And...

Science Friday ·

2024/02/22

The field of chemistry is filled with visual experiences, from molecular diagrams to color-changing reactions to data displayed as peaks and waves on a spectrograph. Those experiences and representations are not very accessible to blind and low-vision people. In a recent article in the journal Science Advances, a group of researchers describes using 3D printing to create translucent raised images known as lithophanes that can represent high-resolution chemical data in a tactile and visual form

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18:22

712: Understanding And Curbing Generative AI’s Energy...

Science Friday ·

2024/02/21

The explosion of AI-powered chatbots and image generators, like ChatGPT and DALL-E, over the past two years is changing the way we interact with technology. Their impressive abilities to generate lifelike images from written instructions or write an essay on the topic of your choosing can seem a bit like magic. But that “magic” comes at a steep environmental cost, researchers are learning. The data centers used to power these models consume an enormous amount of not just electricity, but also fresh

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23:18

711: Which Feathered Dinosaurs Could Fly? | Some...

Science Friday ·

2024/02/20

How Do You Know If A Feathered Dinosaur Could Fly? Not all birds can fly. Penguins, ostriches, and kiwis are some famous examples. It’s pretty easy to figure out if a living bird can fly. But it’s a bit tricker when it comes to extinct birds or bird ancestors, like dinosaurs. Remember, all birds are dinosaurs, but not all dinosaurs evolved into birds. Scientists at Chicago’s Field Museum wanted to figure out if there was a way to tell if a dinosaur could fly or not. They found that the number and

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18:42

710: Climate Scientist Michael Mann Wins Defamation Case

Science Friday ·

2024/02/19

Climate scientist Dr. Michael Mann won a defamation lawsuit against two conservative writers last week. The verdict was 12 years in the making. In 2012 writers Rand Simberg and Mark Steyn accused Mann of manipulating his data related to his famous 1998 “hockey stick” graph, which depicts rising global temperatures after the industrial revolution. Simberg compared him to former Penn State football coach and convicted child sex abuser Jerry Sandusky in a blog post for a libertarian think tank. Steyn

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21:48

709: Odysseus Lander Heads To The Moon | Ohio...

Science Friday ·

2024/02/16

If successful, Odysseus will be the first U.S. spacecraft to land on the moon since the Apollo mission. And, in East Palestine, Ohio, the stream that flows under residents’ houses is still polluted following a train derailment and chemical spill. Odysseus Lander Is On Its Way To The Moon Just after 1:00 a.m. on Thursday, February 15, SpaceX successfully launched a commercial spacecraft from NASA’s Kennedy Space Center in Florida. Its destination? The moon. If the lander—named Odysseus—makes it all

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18:39

708: One Crisis After Another: Designing Cities For...

Science Friday ·

2024/02/15

Over the past few years, many cities around the world have changed dramatically as a result of the COVID-19 pandemic, with shifts in office use and commuting patterns as well as where people choose to live, work, and play. But there are other major changes to communities on the horizon as well—such as the need to adapt to the changing climate and sea level rise, and move urban infrastructure away from dependence on fossil fuels. Andy Cohen and Diane Hoskins are co-CEOs of Gensler, a global

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18:33

707: Using Sound To Unpack The History Of Astronomy

Science Friday ·

2024/02/14

Looking into space can be pretty daunting. How do we make sense of the vast expanse above our heads, the millions of stars we might be able to see, and the billions more we can’t? Now, what about listening to space? That’s the task that Sam Harnett and Chris Hoff gave themselves, for their series “Cosmic Visions.” They’re the team behind “The World According to Sound,” a podcast that’s brought our listeners close to the sounds of science over the last few years. This new series takes listeners

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24:26

706: Colorectal Cancer Rates Rising In Young People |...

Science Friday ·

2024/02/13

Colorectal Cancer Rates Are Rising In Young People Gastrointestinal medicine practitioners have noticed something strange in recent years: More and more young people are being diagnosed with colorectal cancer. It used to be incredibly rare for anyone under the age of 50 to be diagnosed with colorectal cancer. Cases were generally limited to people with excess weight who live a sedentary lifestyle. But practitioners are increasingly seeing people in their 40s, 30s, and even 20s without prior risk

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18:47

705: A Black Physician’s Analysis Of The Legacy Of...

Science Friday ·

2024/02/12

Uché Blackstock always knew she wanted to be a doctor. Her mother was a physician at Kings County Hospital in Brooklyn, New York. Uché and her twin sister, Oni, would often visit their mother at work, watching her take care of patients. And they loved to play with their mother’s doctor’s bag. The sisters went on to become the first Black mother-daughter legacy students to graduate from Harvard Medical School. SciFri producer Kathleen Davis talks with Dr. Uché Blackstock, emergency physician and

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