Scientific American Podcast: Science Talk
Science Talk is a podcast of longer-form audio experiments from Scientific American--from immersive sonic journeys into nature to deep dives into research with leading experts.
Episodes
July 16, 2025 • 17 mins
Come with Science Quickly on a field trip to the Laser Interferometer Gravitational-Wave Observatory (LIGO) Lab at the Massachusetts Institute of Technology. Host Rachel Feltman is joined by Matthew Evans, MIT’s MathWorks professor of physics, to talk about the last 10 years of gravitational-wave research. Gravitational waves were discovered in 2015 by the LIGO team. Since then, innovations from the LIGO Lab have changed our unders...
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July 14, 2025 • 15 mins
Each year more than half a million people undergo bariatric surgery, a procedure geared toward weight loss. But research shows that stigma around weight can continue to affect people’s lives even during recovery from the procedure.
Larissa McGarrity is a clinical associate professor at the Spencer Fox Eccles School of Medicine at the University of Utah and lead psychologist at the school’s comprehensive Weight Management Program....
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July 11, 2025 • 24 mins
Last year Science Quickly looked across disciplines to piece apart the science of singing. To understand why humans sing, musicologists collaborated on an international study of folk music. To understand how we sing, neuroscientists differentiated how our brain processes speech and singing. Music enthusiast and associate mind and brain editor Allison Parshall takes us through some hallmark 2024 studies that, taken together, piece t...
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July 9, 2025 • 16 mins
Sick coral reefs are visually striking—bleached and lifeless, far from the vibrancy we’ve come to expect. But what does an unhealthy coral system sound like? In this rerun, conservation bioacoustics researcher Isla Keesje Davidson tells Science Quickly all about the changing soundscape of the seas.
Recommended reading:
84 Percent of Corals Impacted in Mass Bleaching Event https://www.scientificamerican.com/article/worst-coral-...
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July 7, 2025 • 17 mins
Ten months ago Science Quickly made space history by conducting the first-ever live interview from the cupola of the International Space Station (ISS). Astronaut Matthew Dominick spoke with Rachel Feltman about his work on the ISS and the stunning space photography that first caught our attention.
Watch a video of the interview
See more stunning space photographs from Matthew Dominick
E-mail us at sciencequickly@sciam.com if...
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July 2, 2025 • 16 mins
Drone shows are replacing fireworks for summer celebrations. They’re safer and more environmentally friendly but complicated to program and run. A recent preprint paper proposes an algorithmic solution that can take some technical challenges out of drone operators’ hands and give engineers more creative control. Host Rachel Feltman speaks with researchers Mac Schwager, an associate professor at the aeronautics and astronautics depa...
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June 30, 2025 • 13 mins
Protests around the construction of the now complete Dakota Access Pipeline brought national attention to Energy Transfer, the company that built and owns the pipeline and funded private security against the protestors. Energy Transfer sued the nonprofit Greenpeace for hundreds of millions of dollars. The company claimed that the Standing Rock movement was not Indigenous-led environmental activism but a conspiratorial effort by Gre...
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June 27, 2025 • 32 mins
Creating a bird flu vaccine requires several layers of bioprotective clothing and typically a whole lot of eggs. H5N1 avian influenza infections have gone from flocks of chickens to herds of cattle and humans. Scientists at the Texas Biomedical Research Institute are taking their best guess at the strains of the virus that could spread and are creating critical vaccine candidates.
Multimedia journalist and Scientific American mult...
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June 25, 2025 • 22 mins
Dairy cattle have become an intermediary between avian influenza found in wild birds and the handful of recorded H5N1 bird flu cases in humans. Senior news reporter Meghan Bartels took a trip upstate to Cornell University’s Teaching Dairy Barn. Early last year Texas dairy farmers noticed lethargic cows producing off-color milk. One of them sent Cornell researchers a sample, which genetic sequencing determined to contain a strain of...
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June 23, 2025 • 31 mins
Bird flu outbreaks in poultry and cattle have caused concern for public health officials. There have been few reported cases of human transmission, but the growing risks of H5N1 avian influenza have virologists on alert.
Researchers at the St. Jude Center of Excellence for Influenza Research and Response take an annual visit to Delaware Bay to collect samples of bird poop for analysis. These samples give the researchers a look a...
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June 20, 2025 • 12 mins
Testosterone replacement therapy (TRT) is exploding in popularity among men. TRT has been touted online as a cure-all for everything from low energy to poor mood and even as a way to increase masculinity itself. But how much of the buzz is backed by science? Host Rachel Feltman talks with journalist Stephanie Pappas about the realities behind the trend. They explore who truly benefits from TRT, the overlooked risks—including fertil...
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June 18, 2025 • 9 mins
Host Rachel Feltman explores the surprising connection between exercise and the gut microbiome with Scientific American contributing editor Lydia Denworth. Drawing from her latest reporting, Denworth explains how aerobic activity can influence the microbial ecosystems in our digestive tract—boosting diversity, reducing inflammation, and even supporting muscle development and mental well-being. From mouse wheels to marathoners, this...
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Robert F. Kennedy, Jr., has fired the experts on the Centers for Disease Control and Prevention’s vaccine advisory panel, sparking concern among public health officials. Ocean acidification has crossed a critical threshold, posing serious risks to marine life around the globe. And pangolins face growing threats from increased hunting, complicating efforts to protect the world’s most trafficked mammal.
This episode was made possi...
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June 13, 2025 • 13 mins
Most mammalian dads are pretty absent from their offspring’s lives. That sets the Djungarian hamster apart from its fellow fathers. These hamster dads are involved in the birth of their pups, care for them in infancy and even provide food during weaning. They also let the mother hamster go on cooldown walks outside of the burrow, which professor of veterinary medicine and hamster expert Katherine Wynne-Edwards thinks could be essen...
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June 11, 2025 • 14 mins
Animals’ lifespans can be far shorter or much longer than those of humans. Scientists are researching creatures such as “immortal” jellyfish and long-lived tortoises and digging deep into genetic codes to figure out why animals age—and what we can do to improve longevity in humans. João Pedro de Magalhães, chair of molecular biogerontology at the University of Birmingham in England, lays out the state of aging science.
Recomme...
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June 9, 2025 • 8 mins
New simulations suggest the Milky Way’s long-predicted collision with Andromeda might be less of a cosmic certainty than we thought. A massive marine heat wave in 2023 sent North Atlantic temperatures soaring—equal to two decades’ worth of typical warming—with weak winds and climate change largely to blame. And researchers reveal that the planet’s most abundant animals—nematodes—may use teamwork and tower-building to hitch rides to...
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June 6, 2025 • 14 mins
The dedicated staff of the National Weather Service are responsible for the data that underpin your weather forecast and emergency alerts. DOGE Service cuts to the NWS are putting the collection and communication of those data at risk right as we enter a dangerous season of hurricanes, tornadoes, wildfires and extreme heat in the U.S. Senior sustainability editor Andrea Thompson joins host Rachel Feltman to explain what the NWS doe...
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June 2, 2025 • 8 mins
The measles outbreak in West Texas is slowing. Health officials think an increase in vaccination rates contributed to the slowdown, but Texas lawmakers have pushed a new bill to make it even quicker and easier for parents to exempt their children from vaccines. The Centers for Disease Control and Prevention goes counter to the American College of Obstetricians and Gynecologists by removing recommendations for COVID vaccines for pre...
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May 30, 2025 • 18 mins
Are you flourishing? It’s a more understated metric than happiness, but it can provide a multidimensional assessment of our quality of life. Victor Counted, an associate professor of psychology at Regent University and a member of the Human Flourishing Program at Harvard University, joins host Rachel Feltman to review the first wave of results from the five-year, 22-country Global Flourishing Study. Counted reflects on the difficul...
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May 28, 2025 • 10 mins
Male infertility is undercovered and underdiscussed. If a couple is struggling to conceive, there’s a 50–50 chance that sperm health is a contributing factor. Diagnosing male infertility is getting easier with at-home tests—and a new study suggests a method for testing at home that would be more accurate. Study co-author Sushanta Mitra, a professor of mechanical and mechatronics engineering at the University of Waterloo in Ontario,...
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