Science Magazine Podcast

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Linking cat domestication to ancient cult sacrifices, and watching aurorae wander Apr 17, 2025

Show notes

First up on the podcast, Online News Editor David Grimm joins host Sarah Crespi to talk about how an Egyptian cult that killed cats may have also tamed them.

Next on the show, we hear about when the aurorae wandered. About 41,000 years ago, Earth’s magnetic poles took an excursion. They began to move equatorward and decreased in strength to one-tenth their modern levels. Agnit Mukhopadhyay, a research affiliate at the University of Michigan, talks about how his group mapped these magnetic changes, and what it would be like if such a big change took place today.

This week’s episode was produced with help from Podigy.

About the Science Podcast

Authors: Sarah Crespi; David Grimm

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The metabolic consequences of skipping sleep, and cuts and layoffs slam NIH Apr 10, 2025

Show notes

First up on the podcast, ScienceInsider Editor Jocelyn Kaiser joins host Sarah Crespi to discuss big changes in science funding and government jobs this month, including an order to cut billions in contracts, lawsuits over funding caps and grant funding cancellations, and mass firings at the National Institutes of Health.

Next on the show, taking sleep loss more seriously. Jennifer Tudor, an associate professor of biology at Saint Joseph’s University, talks about how skipping out on sleep has many metabolic consequences, from reducing protein synthesis in our brains to making our muscles less efficient at using ATP. Her new review in Science Signaling suggests that given these impacts, we should stop putting sleep last on our to-do lists.

This week’s episode was produced with help from Podigy.

About the Science Podcast

Authors: Sarah Crespi; Jocelyn Kaiser

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Talking about engineering the climate, and treating severe nausea and vomiting during pregnancy Apr 03, 2025

Show notes

Geoengineering experiments face an uphill battle, and a way to combat the pregnancy complication hyperemesis gravidarum

First up on the podcast, climate engineers face tough conversations with the public when proposing plans to test new technologies. Freelance science journalist Rebekah White joins host Sarah Crespi to discuss the questions people have about these experiments and how researchers can get collaboration and buy-in for testing ideas such as changing the atmosphere to reflect more sunlight or altering the ocean to suck up more carbon dioxide.

Next on the show, hyperemesis gravidarum—severe nausea and vomiting during pregnancy—is common in many pregnant people and can have lasting maternal and infant health effects. This week, Marlena Fejzo wrote about her path from suffering hyperemesis gravidarum to finding linked genes and treatments for this debilitating complication. For her essay, Fejzo was named the first winner of the BioInnovation Institute & Science Translational Medicine Prize for Innovations in Women’s Health. Fejzo is a scientist at the Center for Genetic Epidemiology in the department of population and public health sciences at the University of Southern California’s Keck School of Medicine.

This week’s episode was produced with help from Podigy.

About the Science Podcast

Authors: Sarah Crespi; Rebekah White

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Studying urban wildfires, and the challenges of creating tiny AI robots Mar 27, 2025

Show notes

First up this week, urban wildfires raged in Los Angeles in January. Contributing Correspondent Warren Cornwall discusses how researchers have come together to study how pollution from buildings at such a large scale impacts the environment and health of the local population.

Next on the show, Mingze Chen, a graduate student in the mechanical engineering department at the University of Michigan, talks with host Sarah Crespi about the challenges of placing artificial intelligence in small robots. As you add more sensors and data, the demand for computing power and energy goes up. To reduce the power demand, Chen’s team tried a different kind of physics for collecting and processing data using a type of resistance switching memory device called a “memristor.”

This week’s episode was produced with help from Podigy.

About the Science Podcast

Authors: Sarah Crespi; Warren Cornwall

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Why seals don’t drown, and tracking bird poop as it enters the sea Mar 20, 2025

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First up this week, Newsletter Editor Christie Wilcox joins host Sarah Crespi to discuss stories from the sea, including why scientists mounted cameras on seabirds, backward and upside-down; newly discovered organisms from the world’s deepest spot, the Mariana Trench; and how extremely venomous, blue-lined octopus males use their toxin on females in order to mate. Read more or subscribe at science.org/scienceadviser.

Next on the show, J. Chris McKnight, a senior research fellow in the Sea Mammal Research Unit at the University of St. Andrews, talks about testing free-living seals to see how they respond to different carbon dioxide or oxygen levels in the air. It turns out they don’t respond like other mammals, which go into panic under high carbon dioxide; instead, seals appear to directly detect oxygen, a safer bet when your life is mostly spent diving deep underwater.

This week’s episode was produced with help from Podigy.

About the Science Podcast

Authors: Sarah Crespi; Christie Wilcox

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Why sign language could be crucial for kids with cochlear implants, studying the illusion of pain, and recent political developments at NIH Mar 13, 2025

Show notes

First up this week, science policy editor Jocelyn Kaiser joins host Sarah Crespi to discuss the latest news about the National Institutes of Health—from reconfiguring review panels to canceled grants to confirmation hearings for a new head, Jay Bhattacharya.

Next, although cochlear implants can give deaf children access to sound, it doesn’t always mean they have unrestricted access to language. Producer Meagan Cantwell talks with Contributing Correspondent Cathleen O’Grady about why some think using sign language with kids with cochlear implants gives them the best chance at communicating fully and fluently.

Finally, using a pain illusion to better understand how the brain modulates pain. Francesca Fardo, an associate professor in the department of clinical medicine at Aarhus University, talks with host Sarah Crespi about the role of learning and uncertainty in pain perception. It turns out, the more uncertain we are about a sensation that could be painful, the more pain we feel.

This week’s episode was produced with help from Podigy.

About the Science Podcast

Authors: Sarah Crespi; Meagan Cantwell; Cathleen O’Grady; Jocelyn Kaiser

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Intrusive thoughts during pregnancy, paternity detectives, and updates from the Trump Tracker Mar 06, 2025

Show notes

First up this week, International News Editor David Malakoff joins host Sarah Crespi to discuss the most recent developments in U.S. science under Donald Trump’s second term, from the impact of tariffs on science to the rehiring of probationary employees at the National Science Foundation.

Next, we tackle the question of extra-pair paternity in people—when marriage or birth records of parentage differ from biological parentage. Contributing Correspondent Andrew Curry writes about researchers looking into the question of how often children are genetically unrelated to their presumed fathers by using genealogy and genetic testing.

Finally, Susanne Schweizer, Scientia associate professor at the University of New South Wales, talks about her article on intrusive thoughts in the perinatal period as part of a special issue on women’s health in Science Advances. Almost all pregnant and recent mothers experience intrusive thoughts about harm coming to their offspring. Schweizer and colleagues suggest gaining a better understanding of intrusive thoughts during this highly predictable window could help explain the phenomenon more broadly.

This week’s episode was produced with help from Podigy.

About the Science Podcast

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Keeping transgenic corn sustainable, and sending shrunken heads home Feb 27, 2025

Show notes

First up this week, Kata Karáth, a freelance journalist based in Ecuador, talks with host Sarah Crespi about an effort to identify traditionally prepared shrunken heads in museums and collections around the world and potentially repatriate them.

Next, genetically modified Bt corn has helped farmers avoid serious crop damage from insects, but planting it everywhere all the time can drive insects to adapt to the bacterial toxin made by the plant. Christian Krupke, an entomology professor at Purdue University, talks about the economics of planting Bt corn and how farmers could save money and extend the usefulness of this transgenic plant by being selective about where and when they plant it.

This week’s episode was produced with help from Podigy.

About the Science Podcast

Authors: Sarah Crespi; Kata Karáth

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Shrinking AI for use in farms and clinics, ethical dilemmas for USAID researchers, and how to evolve evolvability Feb 20, 2025

Show notes

First up this week, researchers face impossible decisions as U.S. aid freeze halts clinical trials. Deputy News Editor Martin Enserink joins host Sarah Crespi to talk about how organizers of U.S. Agency for International Development–funded studies are grappling with ethical responsibilities to trial participants and collaborators as funding, supplies, and workers dry up.

Next, freelance science journalist Sandeep Ravindran talks about creating tiny machine learning devices for bespoke use in the Global South. Farmers and medical clinics are using low-cost, low-power devices with onboard machine learning for spotting fungal infections in tree plantations or listening for the buzz of malaria-bearing mosquitoes.

Finally, Michael Barnett, a postdoctoral researcher at the Max Planck Institute for Evolutionary Biology, joins the podcast to discuss evolving evolvability. His team demonstrated a way for organisms to become more evolvable in response to repeated swings in the environment.

This week’s episode was produced with help from Podigy.

About the Science Podcast

Authors: Sarah Crespi; Sandeep Ravindran; Martin Enserink

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Training AI to read animal facial expressions, NIH funding takes a big hit, and why we shouldn’t put cameras in robot pants Feb 13, 2025

Show notes

First up this week, International News Editor David Malakoff joins the podcast to discuss the big change in NIH’s funding policy for overhead or indirect costs, the outrage from the biomedical community over the cuts, and the lawsuits filed in response.

Next, what can machines understand about pets and livestock that humans can’t? Christa Lesté-Lasserre, a freelance science journalist based in Paris, joins host Sarah Crespi to discuss training artificial intelligence on animal facial expressions. Today, this approach can be used to find farm animals in distress; one day it may help veterinarians and pet owners better connect with their animal friends.

Finally, Keya Ghonasgi, a postdoctoral fellow at the Georgia Institute of Technology, talks about a recent Science Robotics paper on the case against machine vision for the control of wearable robotics. It turns out the costs of adding video cameras to exoskeletons—such as loss of privacy—may outweigh the benefits of having robotic helpers on our arms and legs.

This week’s episode was produced with help from Podigy.

About the Science Podcast

Authors: Sarah Crespi; Christa Lesté-Lasserre; David Malakoff

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