Best of online news, and screening for tuberculosis using sound This week’s episode starts out with a look back at the top 10 online news stories with Online News Editor David Grimm. There will be cat expressions and mad scientists, but also electric cement and mind reading. Read all top 10 here. Next on the show, can a machine distinguish a tuberculosis cough from other kinds of coughs? Manuja Sharma, who was a Ph.D. student in the department of electrical and computer engineering at the Univer...
Jan 04, 2024•34 min•Transcript available on Metacast Seeking the Majorana fermion particle, and a look at El Salvador’s adoption of cryptocurrency First up on the show this week, freelance science journalist Zack Savitsky and host Sarah Crespi discuss the hunt for the elusive Majorana fermion particle, and why so many think it might be the best bet for a functional quantum computer. We also hear the mysterious tale of the disappearance of the particle’s namesake, Italian physicist Ettore Majorana. Next in the episode, what happens when you make a ...
Dec 22, 2023•40 min•Transcript available on Metacast Top science from 2023, and a genetic tool for pangolin conservation First up this week, it’s Science’s Breakthrough of the Year with producer Meagan Cantwell and News Editor Greg Miller. But before they get to the tippy-top science find, a few of this year’s runners-up. See all our end-of-year coverage here. Next, Jen Tinsman, a forensic wildlife biologist at the U.S. Fish and Wildlife Service, joins host Sarah Crespi to discuss using genetics to track the illegal pangolin trade. These scaly lit...
Dec 14, 2023•32 min•Transcript available on Metacast A look at cognition in livestock, and the coevolution of wild bird–human cooperation This week we have two stories on thinking and learning in animals. First, Online News Editor David Grimm talks with host Sarah Crespi about a reporting trip to the Research Institute for Farm Animal Biology in northern Germany, where scientists are studying cognition in farm animals, including goats, cows, and pigs. And because freelance audio producer Kevin Caners went along, we have lots of sound from the trip...
Dec 07, 2023•38 min•Transcript available on Metacast Raising the pH of the ocean to reduce carbon in the air, and robots that can landscape First up on this week’s show, Contributing Correspondent Warren Cornwall discusses research into making oceans more alkaline as a way to increase carbon capture and slow climate change. But there are a few open questions with this strategy: Could enough material be dumped in the ocean to slow climate change? Would mining that material release a lot of carbon? And, would either the mining or ocean changes have ...
Nov 30, 2023•35 min•Transcript available on Metacast A leap in supercomputing is a leap for science, cracking the dolomite problem, and a book on where patriarchy came from First up on this week’s show, bigger supercomputers help make superscience. Staff Writer Robert F. Service joins host Sarah Crespi to discuss how the first exascale computer is enabling big leaps in scientists’ models of the world. Next, producer Meagan Cantwell talks with the University of Michigan’s Wenhao Sun, professor of materials science and engineering, and graduate stud...
Nov 23, 2023•55 min•Transcript available on Metacast What it means that artificial intelligence can now forecast the weather like a supercomputer, and measuring methane emissions from municipal waste First up on this week’s show, Staff Writer Paul Voosen joins host Sarah Crespi to talk about how artificial intelligence has become shockingly good at forecasting the weather while using way fewer resources than other modeling systems. Read a related Science paper. Next, focusing on municipal solid waste—landfills, compost centers, garbage dumps—may o...
Nov 16, 2023•22 min•Transcript available on Metacast First up on this week’s show: the future of science in Russia. We hear about how the country’s scientists are split into two big groups: those that left Russia after the invasion of Ukraine and those that stayed behind. Freelance journalist Olga Dobrovidova talks with host Sarah Crespi about why so many have left, and the situation for those who remain. Next on the show: miniature, battery-free bioelectronics. Jacob Robinson, a professor in the department of electrical and computer engineering a...
Nov 09, 2023•35 min•Transcript available on Metacast Why scientists are trying to make anemones act like corals, and why it’s so hard to make pharmaceuticals for brain diseases First up on this week’s show, coaxing anemones to make rocks. Newsletter Editor Christie Wilcox joins host Sarah Crespi to discuss the difficulties of raising coral in the lab and a research group that’s instead trying to pin down the process of biomineralization by inserting coral genes into easy-to-maintain anemones. Next on the show, a look at why therapeutics for both n...
Nov 02, 2023•39 min•Transcript available on Metacast First up on this week’s show, Staff Writer Erik Stokstad joins host Sarah Crespi to talk about why it might make sense to grow shorter corn. It turns out the towering corn typically grown today is more likely to blow over in strong winds and can’t be planted very densely. Now, seedmakers are testing out new ways to make corn short through conventional breeding and transgenic techniques in the hopes of increasing yields. Next up on the show, the last in our series of books on sex and gender with ...
Oct 26, 2023•33 min•Transcript available on Metacast Restoring land after dam removal, and phonons as a basis for quantum computing First up on this week’s show, planting in the silty soil left behind after a dam is removed and reservoirs recede. Contributing Correspondent Warren Cornwall joins host Sarah Crespi to talk about the world's largest dam removal project and what ecologists are doing to revegetate 36 kilometers of new river edge. Next up on the show, freelance producer and former guest Tanya Roussy. She talks with Andrew Cleland, a prof...
Oct 19, 2023•30 min•Transcript available on Metacast The Kuiper belt might be bigger than we thought, and managing the effects of wildfires on indoor pollution First up on this week’s show, the Kuiper belt—the circular field of icy bodies, including Pluto, that surrounds our Solar System—might be bigger than we thought. Staff Writer Paul Voosen joins host Sarah Crespi to discuss the distant Kuiper belt objects out past Neptune, and how they were identified by telescopes looking for new targets for a visit by the New Horizons spacecraft. Next up on...
Oct 13, 2023•42 min•Transcript available on Metacast Pushing ancient DNA past the Pleistocene, and linking agriculture to biodiversity and infectious disease First up on this week’s show, Staff Writer Erik Stokstad brings a host of fascinating stories, from the arrival of deadly avian flu in the Galápagos to measuring the effect of earthworms on our daily bread. He and host Sarah Crespi start off the segment discussing just how much stuff you need to avoid abject poverty and why measuring this value can help us balance human needs against planetar...
Oct 05, 2023•36 min•Transcript available on Metacast A book on utopias and gender roles, India looks to beat climate-induced heat in cities, and how ancient Amazonians improved the soil First up on this week’s show: the latest in our series of books on sex, gender, and science. Books host Angela Saini discusses Everyday Utopia: In Praise of Radical Alternatives to the Traditional Family Home with ethnographer Kristen Ghodsee, professor of Russian and Eastern European studies at the University of Pennsylvania. See this year’s whole series here. Als...
Sep 28, 2023•51 min•Transcript available on Metacast The key to shrinking cartels is cutting recruitment, and a roundup of books, video games, movies, and more First up on this week’s show: modeling Mexico’s cartels. Rafael Prieto-Curiel, a postdoctoral research fellow at the Complexity Science Hub in Vienna, joins host Sarah Crespi to discuss how modeling cartel activities can help us understand the impact of potential interventions such as increased policing or reducing gang recruitment. Lisa Sanchez, executive director of México Unido Contra la...
Sep 21, 2023•37 min•Transcript available on Metacast Receptors that give our feline friends a craving for meat, and using combustion to propel insect-size robots First up on this week’s episode, Online News Editor David Grimm joins host Sarah Crespi to talk about why despite originating from a dry, desert environment cats seem to love to eat fish. Next on the show, bugs such as ants are tiny while at the same time fast and strong, and small robots can’t seem to match these insectile feats of speed and power. Cameron Aubin, a postdoc at Cornell Uni...
Sep 14, 2023•34 min•Transcript available on Metacast How the Tonga eruption caused some of the fastest underwater flows in history, and why many U.S. renewable energy projects are on hold First up on this week’s show, we hear about extremely fast underwater currents after a volcanic eruption. Producer Meagan Cantwell talks with sedimentary geologist Michael Clare and submarine volcanologist Isobel Yeo, both at the U.K. National Oceanography Centre. They discuss the complex aftermath of the Hunga Tonga-Hunga Ha’apai eruption, including fast and pow...
Sep 07, 2023•33 min•Transcript available on Metacast How active learning improves calculus teaching, and using machine learning to map odors in the smell space First up on this week’s show, Laird Kramer, a professor of physics and faculty in the STEM Transformation Institute at Florida International University (FIU), talks with host Sarah Crespi about students leaving STEM fields because of calculus and his research into improving instruction. We also hear from some Science staffers about their own calculus trauma, from fear of spinning shapes to ...
Aug 31, 2023•38 min•Transcript available on Metacast A close look at a coronal hole, how salt and hackers can affect science, and the latest book in our series on science, sex, and gender First up on this week’s show, determining the origin of solar wind—the streams of plasma that emerge from the Sun and envelope the Solar System. Host Sarah Crespi talks with Lakshmi Pradeep Chitta, a research group leader at the Max Planck Institute for Solar System Research, about how tiny jets in so-called coronal holes seem to be responsible. Sarah also talks ...
Aug 24, 2023•52 min•Transcript available on Metacast Ancient wildfires may have doomed Southern California’s big mammals, and do insular societies have more complex languages? First up on this week’s show, what killed off North America’s megafauna, such as dire wolves and saber-toothed cats? Online News Editor Mike Price joins host Sarah Crespi to talk about the likely culprits: climate or humans, or one that combines both—fire. They discuss how the La Brea Tar Pits are helping researchers figure this out. Read the related Science paper. Next up, ...
Aug 17, 2023•48 min•Transcript available on Metacast First up on this week’s show, we hear about the skewed perception of our own hands, extremely weird giant viruses, champion regenerating flatworms, and more from Newsletter Editor Christie Wilcox. Christie also chats with host Sarah Crespi about her work on a daily newsletter and what it takes to do it 5 days a week. Read more newsletters and sign up for your daily dose of Science and science. Next on the show, AAAS Intern Andrew Saintsing learns about why trees are repulsive—to one another. Mic...
Aug 10, 2023•27 min•Transcript available on Metacast Bringing together ancient DNA from a burial site and a giant database of consumer ancestry DNA helps fill gaps in African American ancestry, and a reckoning for Philadelphia’s Mütter Museum First up on this week’s show, ancient DNA researchers and ancestry giant 23andMe joined forces to uncover present day ties to a cemetery at the Catoctin Furnace ironworks in Maryland, where enslaved people were buried. Contributing producers and hosts of the Dope Labs podcast Titi Shodiya and Zakiya Whatley s...
Aug 03, 2023•36 min•Transcript available on Metacast On this week’s show: evaluating scientific collaborations between independent scholars and industry, farming in ancient Europe, and a book from our series on sex, gender, and science. First up on this week’s show, a look behind the scenes at a collaboration between a social media company and 17 academics. Host Sarah Crespi speaks with Michael Wagner, a professor at the University of Wisconsin-Madison’s School of Journalism and Mass Communication who acted as an impartial observer for Meta’s U.S....
Jul 27, 2023•49 min•Transcript available on Metacast A massive effort by African volunteers is ensuring artificial intelligence understands their native languages, and measuring 40,000 skeletons Our AI summer continues with a look at how to get artificial intelligence to understand and translate the thousands of languages that don’t have large online sources of text and audio. Freelance journalist Sandeep Ravindran joins host Sarah Crespi to discuss Masakhane, a volunteer-based project dedicated to spurring growth in machine learning of African la...
Jul 20, 2023•39 min•Transcript available on Metacast Science’s NextGen voices share their thoughts on artificial intelligence, how to avoid creating sociopathic robots, and a visit to a historic observatory as researchers pack their bags As part of a Science special issue on finding a place for artificial intelligence (AI) in science and society, Producer Kevin McLean shares voices from the next generation of researchers. We hear from students about how they think human scientists will still need to work alongside AI in the future. Continuing the ...
Jul 13, 2023•30 min•Transcript available on Metacast Worldwide survey kills the myth of “Man the Hunter,” and tightly constraining the electric dipole moment of the electron First up this week on the show, freelance science writer Bridget Alex joins host Sarah Crespi to discuss busting the long-standing myth that in our deep past, virtually all hunters were men and women tended to be gatherers. It turns out women hunt in the vast majority of foraging societies, upending old stereotypes. After that, we learn about a hunt for zero. Tanya Roussy, a r...
Jul 06, 2023•31 min•Transcript available on Metacast On this week’s show: Improvements in cryopreservation technology, teaching robots to navigate new places, and the latest book in our series on sex and gender First up this week on the show, scientists are learning how to “cryopreserve” tissues—from donor kidneys to coral larvae. Contributing Correspondent Warren Cornwall joins host Sarah Crespi to talk about the latest in freezing and thawing technology. Next up: How much does a robot need to “know” about the world to navigate it? Theophile Gerv...
Jun 29, 2023•48 min•Transcript available on Metacast On this week’s show: Euclid, a powerful platform for detecting dark energy, and a slithery segment on how snakes make scales First up on the show this week, we’re taking the hunt for dark energy to space. Staff Writer Daniel Clery joins host Sarah Crespi to discuss a new space-based telescope called Euclid, set to launch next month. Euclid will kick off a new phase in the search for dark energy, the mysterious force that is accelerating the expansion of the universe. Also on this week’s show, sn...
Jun 22, 2023•29 min•Transcript available on Metacast A special issue on light pollution, and first aid for mental well-being First up this week, cleaning up the night skies. As part of a special issue on light pollution, host Sarah Crespi talks with Stefan Wallner, a researcher at the Slovak Academy of Sciences, about why light pollution is so difficult to measure and how coordination efforts between disciplines will help us darken the nights. Also on this week’s show, a mental health first aid course for scientists. Azmi Ahmad, a postdoctoral fel...
Jun 15, 2023•23 min•Transcript available on Metacast A single-shot cat contraceptive, and a close look at “dry” chemistry First up this week: an innovation in cat contraception. Online News Editor David Grimm talks with host Sarah Crespi about a nonsurgical pregnancy prevention technique for cats and why such an approach has been a long-term goal for cat population control. Also on this week’s show, we hear about new insights into mechanical chemistry—using physical force to push molecules together. Science Editor Jake Yeston and Yerzhan Zholdasso...
Jun 08, 2023•29 min•Transcript available on Metacast 
