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23/10/2019
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28/03/2025
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HACE 1 DÍA

Green stuff, brown stuff: Secrets to a great compost pile

If you’re a gardener, thinking about getting your soil in shape probably means thinking about compost. But composting can be a mysterious process. What can go into the pile? How do you balance carbon and nitrogen? And how do you do it in a city? Compost expert Cassandra Marketos joins Host Ira Flatow to break down the basics of what she calls “purposeful decomposition,” and give practical tips for the backyard composter. Read an excerpt from Marketos’ new book, “Compost after Reading.” Guest: Cassandra Marketos is the author of “Compost After Reading: A Practical Manifesto for Purposeful Decomposition.” 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.

hace 1 día

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18 min
HACE 3 DÍAS

Why so many studies can’t be replicated

How do we know what we know? That's where science comes in—it gives us a method for testing our ideas and getting trustworthy results. But some researchers have warned that many scientific studies can't be replicated. To find out how deep the problem goes, the US Defense Advanced Research Projects Agency funded one of the largest analyses of social science, called the SCORE project. They checked the results of thousands of papers across economics, education, and psychology—and found that only half of them could be replicated. Joining Host Ira Flatow to discuss the findings are Tim Errington, one of the leads on this project, and economist Abel Brodeur, who recently released the results of a separate replication study that found more encouraging results than SCORE did. Guest: Dr. Tim Errington is senior director of research at the Center For Open Science in Washington, D.C. Dr. Abel Brodeur is a professor of economics at the University of Ottawa and founder of the Institute for Replication. 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.

hace 3 días

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18 min
HACE 5 DÍAS

Can GLP-1 drugs treat addiction?

GLP-1 drugs like Ozempic, Wegovy, and Zepbound are prescribed for weight loss, diabetes, and blood-sugar management. But as more people use them, patients are reporting a decrease in cravings for drugs and alcohol. Researchers are now investigating whether GLP-1s might be effective for treating alcohol and drug addiction. How much do we know? What are the risks? And do these drugs tell us anything new about the biology of addiction? Host Flora Lichtman talks with neuroscientist Joseph Schacht, who is conducting a clinical trial on GLP-1s and alcohol use; and Sarah Carstens, addictions clinical director of Outpatient Services at Penn Medicine’s Princeton House Behavioral Health. Guests: Dr. Joseph Schacht is the co-director of the Division of Addiction Science, Prevention, and Treatment at the University of Colorado Anschutz School of Medicine. Sarah Carstens is the addictions clinical director of Outpatient Services at Penn Medicine’s Princeton House Behavioral Health. 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.

hace 5 días

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19 min
HACE 4 DÍAS

How a sound designer gave an alien its voice (and 250 words)

Movies may be a largely visual medium, but sound plays a huge role in setting tone, creating new worlds, and fleshing out characters. Sound designer Erik Aadahl has brought some of Hollywood’s iconic creatures to life with sound, like the Transformers, 2014’s Godzilla, and Rocky the alien from “Project Hail Mary.” He joins Flora to talk about the science of sound design, and how he uses his background in biology to look for sounds in the animal kingdom. Guest: Erik Aadahl is a sound designer and editor at E² in Los Angeles, California. 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.

hace 4 días

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18 min
6 ABR

Can algae help pull microplastics out of our water supply?

Microplastics and nanoplastics have been found just about everywhere: in our soil, our bodies, and our water. Recent research involving bioengineered algae has had success in capturing and removing microplastics from water. Environmental reporter Kate Grumke joins Producer Kathleen Davis to talk about the latest approaches to addressing microplastics, and researcher Susie Dai discusses her work using algae to pull them out of wastewater. Guests: Dr. Susie Dai is a professor of chemical and environmental engineering at the University of Missouri. Kate Grumke is a senior environmental reporter for St. Louis Public Radio. 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.

6 abr

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13 min
30 MAR

CERN finds a new particle + News alerts for the cosmos

Researchers at the Large Hadron Collider in Switzerland have announced that they discovered a new subatomic particle. Roughly four times more massive than a standard proton, this short-lived piece of matter called Ξcc⁺(Xi-cc-plus) is like an extra-heavy proton, researchers say. Physicist Hassan Jawahery joins Host Flora Lichtman to unpack how the particle was found, and what its discovery means for theoretical physics. Then, astronomer Eric Bellm describes a new alert system that could flag potentially significant changes in the southern night sky in real time. On its first night of testing at the Rubin Observatory in Chile, the system fired off 800,000 alerts. Guests: Dr. Hassan Jawahery is a distinguished university professor at the University of Maryland and a member of the LHCb consortium. Dr. Eric Bellm is alert product group lead for the Rubin Observatory and a research associate professor at the University of Washington. 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.

30 mar

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13 min
2 ABR

Should Pluto be a planet again?

In 2006, a vote by the International Astronomical Union determined that Pluto was no longer a planet. The decision sparked a heated public debate, and many planetary scientists disagreed with kicking Pluto out of the planet club. Twenty years later, Pluto is back in the news: NASA administrator Jared Isaacman said he wants to make Pluto great again by declaring it… a planet again. And he’s urging President Trump to do so by executive order. Why does this Plutonian debate keep rearing its head? And does the president have the power to do that? To answer those questions and more, Host Ira Flatow talks with planetary scientists and Pluto champions Amanda Bosh and Alan Stern. Guests: Dr. Amanda Bosh is the executive director of the Lowell Observatory in Arizona, where Pluto was first discovered. Dr. Alan Stern is the vice president at the Southwest Research Institute and principal investigator of the New Horizons mission to Pluto. 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.

2 abr

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19 min
7 ABR

Is the US backing out of the electric vehicle market?

Last year, Chinese carmaker BYD sold millions of electric vehicles, overtaking Tesla to become the world’s biggest seller of EV cars. And BYD cars weren’t just for the Chinese market. They went to Europe, Asia, and Mexico, and may soon be available in Canada. But thanks to tariffs and regulations, BYDs are not available to U.S. buyers. China policy expert Kyle Chan joins Host Ira Flatow for a look at the growing EV market worldwide, and how the U.S. seems to be putting the brakes on battery-powered cars. Guest: Kyle Chan is an expert on Chinese technology and industrial policy. 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.

7 abr

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14 min
HACE 6 DÍAS

What a sperm whale’s birth tells us about whale culture

Scientists recently published the first footage of a sperm whale birth, and it was a crowded ordeal. More than 10 other sperm whales were there for the delivery and helped keep the baby whale afloat—and not all of them were related to mom. How much do we actually understand whale culture? And how should we think about altruism in the animal kingdom? Host Flora Lichtman chats with whale biologist Shane Gero about what it was like to witness this birth and what it tells us about whale culture. Guest: Dr. Shane Gero is a whale biologist at Carleton University, founder of The Dominica Sperm Whale Project, and biology lead for Project CETI. He’s based in Ottawa, Canada. 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.

hace 6 días

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13 min
27 MAR

Move over, vibe-coding. Vibe-proving is here for math

When ChatGPT first came onto the scene, it wowed users with its writing abilities, but drew laughs for generating images of seven-fingered hands and struggling with basic math, where 2+2 didn’t always equal 4. But more recently, things have changed: Google and OpenAI’s models bagged gold medals at the International Mathematical Olympiad last year, and now some experts say AI could pose an existential threat to the field of mathematics itself. Mathematicians Emily Riehl and Daniel Litt join Host Flora Lichtman to explore how this technology could change the way math discoveries are made—and what could be lost if things go too far. Guests: Dr. Emily Riehl is a professor of mathematics at Johns Hopkins University in Baltimore, MD. Dr. Daniel Litt is an associate professor of mathematics at the University of Toronto. 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.

27 mar

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19 min

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